#159AEE
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.3% 0.161 244.9), rgb(21, 154, 238).
Aa
Black text reads best on this color (6.88:1).
About this color
#159AEE is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.161 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.026 away. Black text reads best on it, at 6.88:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.88:1 |
| White text | 3.04:1 |
Values
| HEX | #159AEE |
| RGB | rgb(21, 154, 238) |
| HSL | hsl(203, 86%, 51%) |
| OKLCH | oklch(66.3% 0.161 244.9) |
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 #159AEE | 3.04:1 | AA large text | Lc -62.1 | Content text, not long reading |
| Black text on #159AEE | 6.88:1 | AA | Lc 47.4 | Large or bold text, headings |
| #159AEE text on white | 3.04:1 | AA large text | Lc 56.7 | Large or bold text, headings |
| #159AEE text on black | 6.88:1 | AA | Lc -45.1 | 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
#DEECF8
oklch(93.6% 0.022 243.8)
-
Step 200
200
#C2DDF5
oklch(88.5% 0.044 245.1)
-
Step 300
300
#96C7F1
oklch(81% 0.079 244.9)
-
Step 400
400
#55A8EA
oklch(70.8% 0.126 245)
-
Step 500
500 (this color)
#159AEE
oklch(66.3% 0.161 244.9)
-
Step 600
600
#0079BF
oklch(55.7% 0.14 245)
-
Step 700
700
#0065A1
oklch(49% 0.124 245.1)
-
Step 800
800
#005385
oklch(42.7% 0.107 244.8)
-
Step 900
900
#004570
oklch(37.7% 0.095 244.9)
-
Step 950
950
#012944
oklch(27.1% 0.066 244.1)
#159AEE 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) | #719EF2 | 0.066 |
| Deuteranopia (no green cones) | #538BEC | 0.047 |
| Tritanopia (no blue cones) | #00AFB9 | 0.112 |
| Achromatopsia (no color) | #949494 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #159AEE
#159AEE
oklch(66.3% 0.161 244.9)
- #D07C00
#D07C00
oklch(66.2% 0.149 64.7)
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 #159AEE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.026
- Dark Sky Blue #448EE4 ΔE 0.035
- Dodger Blue #1E90FF ΔE 0.040
- Cornflower Blue #6495ED ΔE 0.049
- Soft Blue #6488EA ΔE 0.063
- Water Blue #0E87CC ΔE 0.068
- Faded Blue #658CBB ΔE 0.086
- Clear Blue #247AFD ΔE 0.089
Use #159AEE 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.