#101C25
Closest named color: Rich Black (#0D1B2A). oklch(22% 0.025 241.7), rgb(16, 28, 37).
Aa
White text reads best on this color (17.28:1).
About this color
#101C25 is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.012 away. White text reads best on it, at 17.28:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.21:1 |
| White text | 17.28:1 |
Values
| HEX | #101C25 |
| RGB | rgb(16, 28, 37) |
| HSL | hsl(206, 40%, 10%) |
| OKLCH | oklch(22% 0.025 241.7) |
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 #101C25 | 17.28:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #101C25 | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #101C25 text on white | 17.28:1 | AAA | Lc 104.1 | Preferred for body text |
| #101C25 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE3
oklch(88.5% 0.016 239.1)
-
Step 300
300
#B1C3D2
oklch(80.8% 0.029 243.2)
-
Step 400
400
#87A5BC
oklch(70.7% 0.047 241.4)
-
Step 500
500
#698EAB
oklch(63% 0.06 242.5)
-
Step 600
600
#507896
oklch(55.5% 0.065 241.8)
-
Step 700
700
#416580
oklch(49.1% 0.06 241.9)
-
Step 800
800
#365368
oklch(42.8% 0.049 240.8)
-
Step 900
900
#2F4455
oklch(37.6% 0.039 243.5)
-
Step 950
950 (this color)
#101C25
oklch(22% 0.025 241.7)
#101C25 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) | #181C25 | 0.013 |
| Deuteranopia (no green cones) | #151A25 | 0.010 |
| Tritanopia (no blue cones) | #081E1F | 0.019 |
| Achromatopsia (no color) | #1B1B1B | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101C25
#101C25
oklch(22% 0.025 241.7)
- #23180F
#23180F
oklch(22% 0.024 60.4)
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 #101C25, 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 0.039
- Jet #212529 ΔE 0.045
- Rich Navy #001219 ΔE 0.052
- Oxford Blue #1B263B ΔE 0.054
- Almost Black #070D0D ΔE 0.070
- Navy Blue #001146 ΔE 0.080
- Dark Brown #341C02 ΔE 0.086
Use #101C25 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.