#101E28
Closest named color: Rich Black (#0D1B2A). oklch(22.7% 0.028 240.6), rgb(16, 30, 40).
Aa
White text reads best on this color (16.95:1).
About this color
#101E28 is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.014 away. White text reads best on it, at 16.95:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.23:1 |
| White text | 16.95:1 |
Values
| HEX | #101E28 |
| RGB | rgb(16, 30, 40) |
| HSL | hsl(205, 43%, 11%) |
| OKLCH | oklch(22.7% 0.028 240.6) |
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 #101E28 | 16.95:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #101E28 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #101E28 text on white | 16.95:1 | AAA | Lc 103.8 | Preferred for body text |
| #101E28 text on black | 1.23:1 | 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
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CFDBE4
oklch(88.5% 0.018 240)
-
Step 300
300
#AFC4D4
oklch(81% 0.032 240.7)
-
Step 400
400
#84A5BE
oklch(70.6% 0.052 241.1)
-
Step 500
500
#648FAE
oklch(63.1% 0.066 240.5)
-
Step 600
600
#4A799A
oklch(55.6% 0.073 240.4)
-
Step 700
700
#3B6683
oklch(49.2% 0.067 239.6)
-
Step 800
800
#31536B
oklch(42.7% 0.056 240.6)
-
Step 900
900
#2C4557
oklch(37.8% 0.044 240.7)
-
Step 950
950 (this color)
#101E28
oklch(22.7% 0.028 240.6)
#101E28 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) | #1A1E28 | 0.016 |
| Deuteranopia (no green cones) | #161B28 | 0.013 |
| Tritanopia (no blue cones) | #062021 | 0.022 |
| Achromatopsia (no color) | #1C1C1C | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101E28
#101E28
oklch(22.7% 0.028 240.6)
- #26190F
#26190F
oklch(22.7% 0.028 58.4)
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 #101E28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.014
- Dark #1B2431 ΔE 0.032
- Jet #212529 ΔE 0.039
- Oxford Blue #1B263B ΔE 0.046
- Rich Navy #001219 ΔE 0.059
- Almost Black #070D0D ΔE 0.078
- Navy Blue #001146 ΔE 0.079
- Space Cadet #2B2D42 ΔE 0.081
Use #101E28 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.