#159EEA
Closest named color: Chefchaouen Blue (#4895EF). oklch(67% 0.153 241.7), rgb(21, 158, 234).
Aa
Black text reads best on this color (7.11:1).
About this color
#159EEA is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.153 and its hue 242°. 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 7.11:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.11:1 |
| White text | 2.95:1 |
Values
| HEX | #159EEA |
| RGB | rgb(21, 158, 234) |
| HSL | hsl(201, 84%, 50%) |
| OKLCH | oklch(67% 0.153 241.7) |
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 #159EEA | 2.95:1 | Fails | Lc -60.8 | Content text, not long reading |
| Black text on #159EEA | 7.11:1 | AAA | Lc 48.6 | Large or bold text, headings |
| #159EEA text on white | 2.95:1 | Fails | Lc 55.5 | Large or bold text, headings |
| #159EEA text on black | 7.11:1 | AAA | Lc -46.3 | 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 400.
-
Step 50
50
#EEF7FE
oklch(97.1% 0.013 241)
-
Step 100
100
#DAEDFB
oklch(93.6% 0.028 239.7)
-
Step 200
200
#BBDEFA
oklch(88.4% 0.054 242.4)
-
Step 300
300
#87C9F9
oklch(80.9% 0.096 241)
-
Step 400
400 (this color)
#159EEA
oklch(67% 0.153 241.7)
-
Step 500
500
#0092DB
oklch(63.2% 0.149 241.7)
-
Step 600
600
#007AB9
oklch(55.5% 0.132 242.1)
-
Step 700
700
#00679C
oklch(49.2% 0.116 241.5)
-
Step 800
800
#005481
oklch(42.7% 0.101 241.9)
-
Step 900
900
#00466C
oklch(37.7% 0.089 241.5)
-
Step 950
950
#002942
oklch(26.9% 0.063 241.6)
#159EEA 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) | #79A0ED | 0.072 |
| Deuteranopia (no green cones) | #5D8EE9 | 0.055 |
| Tritanopia (no blue cones) | #00B1B9 | 0.103 |
| Achromatopsia (no color) | #969696 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #159EEA
#159EEA
oklch(67% 0.153 241.7)
- #D67B05
#D67B05
oklch(66.9% 0.153 61.6)
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 #159EEA, 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 0.044
- Cornflower Blue #6495ED ΔE 0.052
- Dodger Blue #1E90FF ΔE 0.053
- Soft Blue #6488EA ΔE 0.071
- Water Blue #0E87CC ΔE 0.072
- Faded Blue #658CBB ΔE 0.084
- Turquoise Blue #06B1C4 ΔE 0.089
Use #159EEA 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.