#188AFA
Closest named color: Dodger Blue (#1E90FF). oklch(63.5% 0.191 253.8), rgb(24, 138, 250).
Aa
Black text reads best on this color (6.05:1).
About this color
#188AFA is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.191 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.017 away. Black text reads best on it, at 6.05:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 6.05:1 |
| White text | 3.46:1 |
Values
| HEX | #188AFA |
| RGB | rgb(24, 138, 250) |
| HSL | hsl(210, 96%, 54%) |
| OKLCH | oklch(63.5% 0.191 253.8) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #188AFA | 3.46:1 | AA large text | Lc -67.0 | Content text, not long reading |
| Black text on #188AFA | 6.05:1 | AA | Lc 42.5 | Non-text elements, placeholder text |
| #188AFA text on white | 3.46:1 | AA large text | Lc 61.6 | Content text, not long reading |
| #188AFA text on black | 6.05:1 | AA | Lc -40.1 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFC
oklch(93.5% 0.027 255.1)
-
Step 200
200
#C2DCFC
oklch(88.6% 0.052 253.7)
-
Step 300
300
#96C4FC
oklch(80.8% 0.094 253.7)
-
Step 400
400
#58A3FB
oklch(70.7% 0.15 253.8)
-
Step 500
500 (this color)
#188AFA
oklch(63.5% 0.191 253.8)
-
Step 600
600
#0072D6
oklch(55.6% 0.176 253.8)
-
Step 700
700
#0060B5
oklch(49.2% 0.155 253.6)
-
Step 800
800
#004E96
oklch(42.7% 0.135 253.8)
-
Step 900
900
#00417E
oklch(37.7% 0.118 253.6)
-
Step 950
950
#04264C
oklch(27% 0.08 254.4)
#188AFA with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #4C94FE | 0.043 |
| Deuteranopia (no green cones) | #0D81F8 | 0.024 |
| Tritanopia (no blue cones) | #00A5B6 | 0.141 |
| Achromatopsia (no color) | #8A8A8A | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #188AFA
#188AFA
oklch(63.5% 0.191 253.8)
- #BA7C00
#BA7C00
oklch(63.5% 0.134 74.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #188AFA, closest first.
No curated palette has a color within ΔE 0.04 of #188AFA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.017
- Clear Blue #247AFD ΔE 0.041
- Dark Sky Blue #448EE4 ΔE 0.043
- Chefchaouen Blue #4895EF ΔE 0.047
- Soft Blue #6488EA ΔE 0.056
- Cornflower Blue #6495ED ΔE 0.067
- Cornflower #6A79F7 ΔE 0.069
- Water Blue #0E87CC ΔE 0.070
Use #188AFA in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.