#129DE8
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.6% 0.152 241.4), rgb(18, 157, 232).
Aa
Black text reads best on this color (7.01:1).
About this color
#129DE8 is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.152 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.034 away. Black text reads best on it, at 7.01:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.01:1 |
| White text | 2.99:1 |
Values
| HEX | #129DE8 |
| RGB | rgb(18, 157, 232) |
| HSL | hsl(201, 86%, 49%) |
| OKLCH | oklch(66.6% 0.152 241.4) |
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 #129DE8 | 2.99:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #129DE8 | 7.01:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #129DE8 text on white | 2.99:1 | Fails | Lc 56.0 | Large or bold text, headings |
| #129DE8 text on black | 7.01:1 | AAA | Lc -45.8 | Large or bold text, headings |
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
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DEECF7
oklch(93.6% 0.021 241.4)
-
Step 200
200
#C2DDF3
oklch(88.5% 0.042 242.7)
-
Step 300
300
#96C7ED
oklch(80.9% 0.075 242.1)
-
Step 400
400
#54A9E4
oklch(70.7% 0.119 241.5)
-
Step 500
500 (this color)
#129DE8
oklch(66.6% 0.152 241.4)
-
Step 600
600
#007BB8
oklch(55.7% 0.13 241.1)
-
Step 700
700
#00679B
oklch(49.1% 0.115 241)
-
Step 800
800
#005480
oklch(42.6% 0.1 241.3)
-
Step 900
900
#00466C
oklch(37.7% 0.089 241.5)
-
Step 950
950
#002942
oklch(26.9% 0.063 241.6)
#129DE8 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) | #799FEB | 0.073 |
| Deuteranopia (no green cones) | #5D8DE7 | 0.056 |
| Tritanopia (no blue cones) | #00B0B8 | 0.102 |
| Achromatopsia (no color) | #959595 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #129DE8
#129DE8
oklch(66.6% 0.152 241.4)
- #D57A07
#D57A07
oklch(66.6% 0.153 61.2)
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 #129DE8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.034
- Dark Sky Blue #448EE4 ΔE 0.042
- Cornflower Blue #6495ED ΔE 0.053
- Dodger Blue #1E90FF ΔE 0.053
- Water Blue #0E87CC ΔE 0.069
- Soft Blue #6488EA ΔE 0.070
- Faded Blue #658CBB ΔE 0.081
- Cool Blue #4984B8 ΔE 0.088
Use #129DE8 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.