#1188EB
Closest named color: Dark Sky Blue (#448EE4). oklch(62% 0.176 251.2), rgb(17, 136, 235).
Aa
Black text reads best on this color (5.74:1).
About this color
#1188EB is a medium-dark, vivid blue. In OKLCH its lightness is 62%, its chroma 0.176 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.035 away. Black text reads best on it, at 5.74:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.74:1 |
| White text | 3.65:1 |
Values
| HEX | #1188EB |
| RGB | rgb(17, 136, 235) |
| HSL | hsl(207, 87%, 49%) |
| OKLCH | oklch(62% 0.176 251.2) |
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 #1188EB | 3.65:1 | AA large text | Lc -69.0 | Content text, not long reading |
| Black text on #1188EB | 5.74:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #1188EB text on white | 3.65:1 | AA large text | Lc 63.5 | Content text, not long reading |
| #1188EB text on black | 5.74:1 | AA | Lc -38.2 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEEBFA
oklch(93.5% 0.025 251.9)
-
Step 200
200
#C3DCF8
oklch(88.5% 0.047 251.3)
-
Step 300
300
#97C5F7
oklch(80.9% 0.086 251)
-
Step 400
400
#5AA5F3
oklch(70.8% 0.137 251.2)
-
Step 500
500 (this color)
#1188EB
oklch(62% 0.176 251.2)
-
Step 600
600
#0075CE
oklch(55.7% 0.162 251.1)
-
Step 700
700
#0062AE
oklch(49.1% 0.143 251.1)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#004279
oklch(37.6% 0.11 251.3)
-
Step 950
950
#042748
oklch(26.9% 0.073 251.2)
#1188EB 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) | #558FEF | 0.048 |
| Deuteranopia (no green cones) | #2B7DE9 | 0.028 |
| Tritanopia (no blue cones) | #00A0AE | 0.128 |
| Achromatopsia (no color) | #868686 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1188EB
#1188EB
oklch(62% 0.176 251.2)
- #B77600
#B77600
oklch(62% 0.133 71.3)
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 #1188EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.035
- Dodger Blue #1E90FF ΔE 0.036
- Clear Blue #247AFD ΔE 0.047
- Water Blue #0E87CC ΔE 0.047
- Chefchaouen Blue #4895EF ΔE 0.049
- Soft Blue #6488EA ΔE 0.057
- Cerulean Blue #056EEE ΔE 0.069
- Cornflower Blue #6495ED ΔE 0.070
Use #1188EB 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.