#102520
Closest named color: Jet (#212529). oklch(24.5% 0.029 176.6), rgb(16, 37, 32).
Aa
White text reads best on this color (16.06:1).
About this color
#102520 is a very dark close to neutral grey. In OKLCH its lightness is 25%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.032 away. White text reads best on it, at 16.06:1.
| Hue family | Neutrals |
| Lightness | very dark (25%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.30:1 |
| White text | 16.06:1 |
Values
| HEX | #102520 |
| RGB | rgb(16, 37, 32) |
| HSL | hsl(166, 40%, 10%) |
| OKLCH | oklch(24.5% 0.029 176.6) |
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 #102520 | 16.06:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #102520 | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #102520 text on white | 16.06:1 | AAA | Lc 103.0 | Preferred for body text |
| #102520 text on black | 1.30:1 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CDDDD9
oklch(88.4% 0.018 179.3)
-
Step 300
300
#AAC8C0
oklch(80.8% 0.034 177.5)
-
Step 400
400
#7CACA0
oklch(70.7% 0.054 177.4)
-
Step 500
500
#589888
oklch(63.2% 0.071 176)
-
Step 600
600
#3B8272
oklch(55.6% 0.076 176.5)
-
Step 700
700
#2C6E60
oklch(49.1% 0.071 177)
-
Step 800
800
#265A4E
oklch(42.8% 0.059 176)
-
Step 900
900
#244A41
oklch(37.8% 0.047 176.4)
-
Step 950
950 (this color)
#102520
oklch(24.5% 0.029 176.6)
#102520 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) | #242320 | 0.031 |
| Deuteranopia (no green cones) | #202020 | 0.029 |
| Tritanopia (no blue cones) | #082623 | 0.009 |
| Achromatopsia (no color) | #212121 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #102520
#102520
oklch(24.5% 0.029 176.6)
- #2C1B21
#2C1B21
oklch(24.6% 0.029 356.6)
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 #102520, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.032
- Dark #1B2431 ΔE 0.039
- Rich Black #0D1B2A ΔE 0.048
- Oxford Blue #1B263B ΔE 0.055
- Dark Forest Green #002D04 ΔE 0.062
- Very Dark Green #062E03 ΔE 0.064
- Dark Brown #341C02 ΔE 0.071
- Pakistan Green #283618 ΔE 0.077
Use #102520 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.