#129AD2
Closest named color: Dark Sky Blue (#448EE4). oklch(64.7% 0.132 234.1), rgb(18, 154, 210).
Aa
Black text reads best on this color (6.57:1).
About this color
#129AD2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.132 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.052 away. Black text reads best on it, at 6.57:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.57:1 |
| White text | 3.19:1 |
Values
| HEX | #129AD2 |
| RGB | rgb(18, 154, 210) |
| HSL | hsl(197, 84%, 45%) |
| OKLCH | oklch(64.7% 0.132 234.1) |
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 #129AD2 | 3.19:1 | AA large text | Lc -63.9 | Content text, not long reading |
| Black text on #129AD2 | 6.57:1 | AA | Lc 45.5 | Large or bold text, headings |
| #129AD2 text on white | 3.19:1 | AA large text | Lc 58.5 | Large or bold text, headings |
| #129AD2 text on black | 6.57:1 | AA | Lc -43.2 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DEECF5
oklch(93.5% 0.019 235.7)
-
Step 200
200
#C3DEEE
oklch(88.6% 0.036 233.8)
-
Step 300
300
#98C8E4
oklch(80.9% 0.064 234.2)
-
Step 400
400
#58ABD7
oklch(70.7% 0.103 234)
-
Step 500
500 (this color)
#129AD2
oklch(64.7% 0.132 234.1)
-
Step 600
600
#007DAD
oklch(55.6% 0.117 234.3)
-
Step 700
700
#006992
oklch(49.1% 0.103 234.3)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#004865
oklch(37.8% 0.079 233.7)
-
Step 950
950
#022A3D
oklch(26.9% 0.055 234.8)
#129AD2 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) | #7E99D5 | 0.081 |
| Deuteranopia (no green cones) | #6689D1 | 0.066 |
| Tritanopia (no blue cones) | #00A9AD | 0.081 |
| Achromatopsia (no color) | #909090 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #129AD2
#129AD2
oklch(64.7% 0.132 234.1)
- #CB7536
#CB7536
oklch(64.6% 0.132 53.8)
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 #129AD2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.052
- Water Blue #0E87CC ΔE 0.054
- Chefchaouen Blue #4895EF ΔE 0.057
- Blue NCS #118AB2 ΔE 0.060
- Faded Blue #658CBB ΔE 0.063
- Cool Blue #4984B8 ΔE 0.065
- Cornflower Blue #6495ED ΔE 0.071
- Steel Blue #4682B4 ΔE 0.072
Use #129AD2 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.