#151C26
Closest named color: Rich Black (#0D1B2A). oklch(22.4% 0.022 257.3), rgb(21, 28, 38).
Aa
White text reads best on this color (17.12:1).
About this color
#151C26 is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.015 away. White text reads best on it, at 17.12:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.12:1 |
Values
| HEX | #151C26 |
| RGB | rgb(21, 28, 38) |
| HSL | hsl(215, 29%, 12%) |
| OKLCH | oklch(22.4% 0.022 257.3) |
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 #151C26 | 17.12:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #151C26 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #151C26 text on white | 17.12:1 | AAA | Lc 104.0 | Preferred for body text |
| #151C26 text on black | 1.22:1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D3DAE3
oklch(88.6% 0.015 254.6)
-
Step 300
300
#B6C2D2
oklch(81% 0.026 255.6)
-
Step 400
400
#90A2BB
oklch(70.7% 0.042 256.6)
-
Step 500
500
#758BAA
oklch(63.1% 0.053 257)
-
Step 600
600
#5E7596
oklch(55.7% 0.058 257.4)
-
Step 700
700
#4D6280
oklch(49.1% 0.055 257.3)
-
Step 800
800
#3F5068
oklch(42.7% 0.045 257)
-
Step 900
900
#364254
oklch(37.6% 0.035 258.3)
-
Step 950
950 (this color)
#151C26
oklch(22.4% 0.022 257.3)
#151C26 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) | #181C26 | 0.005 |
| Deuteranopia (no green cones) | #171B26 | 0.005 |
| Tritanopia (no blue cones) | #101E1F | 0.020 |
| Achromatopsia (no color) | #1C1C1C | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #151C26
#151C26
oklch(22.4% 0.022 257.3)
- #211A10
#211A10
oklch(22.3% 0.021 76.2)
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 #151C26, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.015
- Dark #1B2431 ΔE 0.034
- Jet #212529 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.049
- Rich Navy #001219 ΔE 0.058
- Almost Black #070D0D ΔE 0.075
- Navy Blue #001146 ΔE 0.081
- Dark Brown #341C02 ΔE 0.081
Use #151C26 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.