#101D27
Closest named color: Rich Black (#0D1B2A). oklch(22.4% 0.027 242.5), rgb(16, 29, 39).
Aa
White text reads best on this color (17.11:1).
About this color
#101D27 is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.027. 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 17.11:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.11:1 |
Values
| HEX | #101D27 |
| RGB | rgb(16, 29, 39) |
| HSL | hsl(206, 42%, 11%) |
| OKLCH | oklch(22.4% 0.027 242.5) |
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 #101D27 | 17.11:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #101D27 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #101D27 text on white | 17.11:1 | AAA | Lc 104.0 | Preferred for body text |
| #101D27 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#D0DBE4
oklch(88.6% 0.017 242.5)
-
Step 300
300
#B0C4D4
oklch(81% 0.031 242.1)
-
Step 400
400
#85A5BE
oklch(70.7% 0.051 242)
-
Step 500
500
#668FAE
oklch(63.2% 0.065 241.7)
-
Step 600
600
#4D7899
oklch(55.5% 0.07 242.6)
-
Step 700
700
#3E6583
oklch(49.1% 0.066 242.8)
-
Step 800
800
#33536A
oklch(42.8% 0.054 240.9)
-
Step 900
900
#2D4456
oklch(37.6% 0.042 242.8)
-
Step 950
950 (this color)
#101D27
oklch(22.4% 0.027 242.5)
#101D27 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) | #191D27 | 0.014 |
| Deuteranopia (no green cones) | #161B27 | 0.011 |
| Tritanopia (no blue cones) | #061F20 | 0.022 |
| Achromatopsia (no color) | #1C1C1C | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101D27
#101D27
oklch(22.4% 0.027 242.5)
- #25190E
#25190E
oklch(22.5% 0.027 63.2)
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 #101D27, 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 0.035
- Jet #212529 ΔE 0.042
- Oxford Blue #1B263B ΔE 0.049
- Rich Navy #001219 ΔE 0.056
- Almost Black #070D0D ΔE 0.074
- Navy Blue #001146 ΔE 0.079
- Space Cadet #2B2D42 ΔE 0.084
Use #101D27 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.