#101D2E
Closest named color: Rich Black (#0D1B2A). oklch(22.8% 0.038 255.6), rgb(16, 29, 46).
Aa
White text reads best on this color (16.97:1).
About this color
#101D2E is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.038 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.011 away. White text reads best on it, at 16.97:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.23:1 |
| White text | 16.97:1 |
Values
| HEX | #101D2E |
| RGB | rgb(16, 29, 46) |
| HSL | hsl(214, 48%, 12%) |
| OKLCH | oklch(22.8% 0.038 255.6) |
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 #101D2E | 16.97:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #101D2E | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #101D2E text on white | 16.97:1 | AAA | Lc 103.8 | Preferred for body text |
| #101D2E 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CFDAEA
oklch(88.5% 0.025 257.6)
-
Step 300
300
#AEC3DE
oklch(81% 0.045 254.8)
-
Step 400
400
#83A3CD
oklch(70.7% 0.071 255.4)
-
Step 500
500
#638CC1
oklch(63.2% 0.092 255.2)
-
Step 600
600
#4A75AD
oklch(55.6% 0.1 255.5)
-
Step 700
700
#3B6295
oklch(49.1% 0.094 255.7)
-
Step 800
800
#315078
oklch(42.6% 0.076 255.4)
-
Step 900
900
#2B4361
oklch(37.8% 0.06 254.6)
-
Step 950
950 (this color)
#101D2E
oklch(22.8% 0.038 255.6)
#101D2E 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) | #161E2F | 0.010 |
| Deuteranopia (no green cones) | #121B2E | 0.007 |
| Tritanopia (no blue cones) | #022123 | 0.034 |
| Achromatopsia (no color) | #1C1C1C | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101D2E
#101D2E
oklch(22.8% 0.038 255.6)
- #271A06
#271A06
oklch(22.9% 0.038 76)
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 #101D2E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.011
- Dark #1B2431 ΔE 0.032
- Oxford Blue #1B263B ΔE 0.042
- Jet #212529 ΔE 0.044
- Rich Navy #001219 ΔE 0.063
- Navy Blue #001146 ΔE 0.067
- Space Cadet #2B2D42 ΔE 0.078
- Almost Black #070D0D ΔE 0.083
Use #101D2E 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.