#101E2D
Closest named color: Rich Black (#0D1B2A). oklch(23% 0.035 251.2), rgb(16, 30, 45).
Aa
White text reads best on this color (16.85:1).
About this color
#101E2D is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.035 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.013 away. White text reads best on it, at 16.85:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.24:1 |
| White text | 16.85:1 |
Values
| HEX | #101E2D |
| RGB | rgb(16, 30, 45) |
| HSL | hsl(211, 48%, 12%) |
| OKLCH | oklch(23% 0.035 251.2) |
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 #101E2D | 16.85:1 | AAA | Lc -106.1 | Preferred for body text |
| Black text on #101E2D | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #101E2D text on white | 16.85:1 | AAA | Lc 103.7 | Preferred for body text |
| #101E2D 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ADC3DB
oklch(80.8% 0.042 250.6)
-
Step 400
400
#82A4C9
oklch(70.7% 0.066 250.9)
-
Step 500
500
#628DBC
oklch(63.1% 0.086 251.4)
-
Step 600
600
#4876A8
oklch(55.5% 0.093 251.7)
-
Step 700
700
#396390
oklch(49% 0.087 251.5)
-
Step 800
800
#305175
oklch(42.7% 0.072 251.8)
-
Step 900
900
#2B435E
oklch(37.6% 0.055 252.2)
-
Step 950
950 (this color)
#101E2D
oklch(23% 0.035 251.2)
#101E2D 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) | #181F2E | 0.013 |
| Deuteranopia (no green cones) | #141C2D | 0.009 |
| Tritanopia (no blue cones) | #032123 | 0.030 |
| Achromatopsia (no color) | #1D1D1D | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101E2D
#101E2D
oklch(23% 0.035 251.2)
- #271A09
#271A09
oklch(23% 0.035 71.9)
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 #101E2D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.013
- Dark #1B2431 ΔE 0.029
- Oxford Blue #1B263B ΔE 0.040
- Jet #212529 ΔE 0.041
- Rich Navy #001219 ΔE 0.064
- Navy Blue #001146 ΔE 0.071
- Space Cadet #2B2D42 ΔE 0.077
- Almost Black #070D0D ΔE 0.084
Use #101E2D 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.