#151A29
Closest named color: Rich Black (#0D1B2A). oklch(22% 0.03 269.7), rgb(21, 26, 41).
Aa
White text reads best on this color (17.33:1).
About this color
#151A29 is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.030 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.012 away. White text reads best on it, at 17.33:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.21:1 |
| White text | 17.33:1 |
Values
| HEX | #151A29 |
| RGB | rgb(21, 26, 41) |
| HSL | hsl(225, 32%, 12%) |
| OKLCH | oklch(22% 0.03 269.7) |
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 #151A29 | 17.33:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #151A29 | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #151A29 text on white | 17.33:1 | AAA | Lc 104.2 | Preferred for body text |
| #151A29 text on black | 1.21:1 | Fails | Lc 0.0 | Not readable |
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 950.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D4D9E7
oklch(88.6% 0.02 270.2)
-
Step 300
300
#B7C0D9
oklch(80.9% 0.037 269.8)
-
Step 400
400
#92A0C5
oklch(70.8% 0.057 268.7)
-
Step 500
500
#7888B7
oklch(63.2% 0.073 269.7)
-
Step 600
600
#6171A3
oklch(55.6% 0.08 270.1)
-
Step 700
700
#505F8B
oklch(49.2% 0.073 269.2)
-
Step 800
800
#414D71
oklch(42.6% 0.062 269.5)
-
Step 900
900
#37405C
oklch(37.6% 0.05 270.2)
-
Step 950
950 (this color)
#151A29
oklch(22% 0.03 269.7)
#151A29 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) | #151B2A | 0.004 |
| Deuteranopia (no green cones) | #131A29 | 0.003 |
| Tritanopia (no blue cones) | #0F1D1F | 0.028 |
| Achromatopsia (no color) | #1A1A1A | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151A29
#151A29
oklch(22% 0.03 269.7)
- #201A09
#201A09
oklch(22% 0.03 90.4)
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 #151A29, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.012
- Dark #1B2431 ΔE 0.038
- Jet #212529 ΔE 0.047
- Oxford Blue #1B263B ΔE 0.050
- Rich Navy #001219 ΔE 0.057
- Navy Blue #001146 ΔE 0.073
- Almost Black #070D0D ΔE 0.074
- Midnight Purple #280137 ΔE 0.083
Use #151A29 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.