#101F24
Closest named color: Rich Black (#0D1B2A). oklch(22.8% 0.023 221.1), rgb(16, 31, 36).
Aa
White text reads best on this color (16.88:1).
About this color
#101F24 is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.022 away. White text reads best on it, at 16.88:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.24:1 |
| White text | 16.88:1 |
Values
| HEX | #101F24 |
| RGB | rgb(16, 31, 36) |
| HSL | hsl(195, 38%, 10%) |
| OKLCH | oklch(22.8% 0.023 221.1) |
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 #101F24 | 16.88:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #101F24 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #101F24 text on white | 16.88:1 | AAA | Lc 103.8 | Preferred for body text |
| #101F24 text on black | 1.24:1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#CFDCE0
oklch(88.6% 0.015 218.1)
-
Step 300
300
#AFC5CD
oklch(80.9% 0.026 221.6)
-
Step 400
400
#84A7B4
oklch(70.7% 0.043 222.5)
-
Step 500
500
#6492A1
oklch(63.2% 0.055 220.3)
-
Step 600
600
#4A7C8C
oklch(55.7% 0.059 220.5)
-
Step 700
700
#3A6877
oklch(49.1% 0.056 221.1)
-
Step 800
800
#315561
oklch(42.7% 0.046 221.4)
-
Step 900
900
#2B464F
oklch(37.6% 0.036 221)
-
Step 950
950 (this color)
#101F24
oklch(22.8% 0.023 221.1)
#101F24 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) | #1C1E24 | 0.019 |
| Deuteranopia (no green cones) | #191C24 | 0.017 |
| Tritanopia (no blue cones) | #082121 | 0.014 |
| Achromatopsia (no color) | #1D1D1D | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101F24
#101F24
oklch(22.8% 0.023 221.1)
- #261914
#261914
oklch(22.8% 0.023 42)
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 #101F24, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.022
- Dark #1B2431 ΔE 0.034
- Jet #212529 ΔE 0.037
- Oxford Blue #1B263B ΔE 0.050
- Rich Navy #001219 ΔE 0.060
- Almost Black #070D0D ΔE 0.077
- Dark Brown #341C02 ΔE 0.080
- Space Cadet #2B2D42 ΔE 0.083
Use #101F24 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.