#128BF8
Closest named color: Dodger Blue (#1E90FF). oklch(63.5% 0.189 252.8), rgb(18, 139, 248).
Aa
Black text reads best on this color (6.07:1).
About this color
#128BF8 is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.189 and its hue 253°. 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 6.07:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.189) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 6.07:1 |
| White text | 3.45:1 |
Values
| HEX | #128BF8 |
| RGB | rgb(18, 139, 248) |
| HSL | hsl(208, 94%, 52%) |
| OKLCH | oklch(63.5% 0.189 252.8) |
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 #128BF8 | 3.45:1 | AA large text | Lc -66.9 | Content text, not long reading |
| Black text on #128BF8 | 6.07:1 | AA | Lc 42.7 | Non-text elements, placeholder text |
| #128BF8 text on white | 3.45:1 | AA large text | Lc 61.4 | Content text, not long reading |
| #128BF8 text on black | 6.07:1 | AA | Lc -40.3 | 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
#C2DCFB
oklch(88.5% 0.051 252.9)
-
Step 300
300
#96C5FB
oklch(81% 0.092 252.4)
-
Step 400
400
#57A4F9
oklch(70.7% 0.147 252.6)
-
Step 500
500 (this color)
#128BF8
oklch(63.5% 0.189 252.8)
-
Step 600
600
#0073D3
oklch(55.6% 0.171 252.9)
-
Step 700
700
#0061B2
oklch(49.2% 0.149 252.5)
-
Step 800
800
#004F94
oklch(42.8% 0.131 252.8)
-
Step 900
900
#00417C
oklch(37.6% 0.116 253)
-
Step 950
950
#03274B
oklch(27.1% 0.078 252.5)
#128BF8 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) | #5094FC | 0.046 |
| Deuteranopia (no green cones) | #1A81F6 | 0.025 |
| Tritanopia (no blue cones) | #00A5B5 | 0.139 |
| Achromatopsia (no color) | #8A8A8A | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #128BF8
#128BF8
oklch(63.5% 0.189 252.8)
- #BC7B00
#BC7B00
oklch(63.5% 0.136 72.5)
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 #128BF8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.017
- Dark Sky Blue #448EE4 ΔE 0.040
- Clear Blue #247AFD ΔE 0.044
- Chefchaouen Blue #4895EF ΔE 0.045
- Soft Blue #6488EA ΔE 0.056
- Cornflower Blue #6495ED ΔE 0.066
- Water Blue #0E87CC ΔE 0.067
- Cornflower #6A79F7 ΔE 0.071
Use #128BF8 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.