#101E2A
Closest named color: Rich Black (#0D1B2A). oklch(22.8% 0.03 245.5), rgb(16, 30, 42).
Aa
White text reads best on this color (16.91:1).
About this color
#101E2A is a very dark, muted blue. In OKLCH its lightness is 23%, its chroma 0.030 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.012 away. White text reads best on it, at 16.91:1.
| Hue family | Blues |
| Lightness | very dark (23%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.24:1 |
| White text | 16.91:1 |
Values
| HEX | #101E2A |
| RGB | rgb(16, 30, 42) |
| HSL | hsl(208, 45%, 11%) |
| OKLCH | oklch(22.8% 0.03 245.5) |
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 #101E2A | 16.91:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #101E2A | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #101E2A text on white | 16.91:1 | AAA | Lc 103.8 | Preferred for body text |
| #101E2A 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CFDBE6
oklch(88.6% 0.02 245.7)
-
Step 300
300
#AEC4D7
oklch(81% 0.036 244.3)
-
Step 400
400
#83A5C3
oklch(70.7% 0.058 245.4)
-
Step 500
500
#638EB4
oklch(63% 0.074 246)
-
Step 600
600
#49789F
oklch(55.6% 0.08 245)
-
Step 700
700
#3A6588
oklch(49.1% 0.074 244.7)
-
Step 800
800
#31526F
oklch(42.6% 0.062 246.4)
-
Step 900
900
#2B445A
oklch(37.6% 0.049 246.1)
-
Step 950
950 (this color)
#101E2A
oklch(22.8% 0.03 245.5)
#101E2A 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) | #191E2B | 0.014 |
| Deuteranopia (no green cones) | #161B2A | 0.013 |
| Tritanopia (no blue cones) | #052122 | 0.026 |
| Achromatopsia (no color) | #1D1D1D | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101E2A
#101E2A
oklch(22.8% 0.03 245.5)
- #261A0D
#261A0D
oklch(22.9% 0.03 67.7)
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 #101E2A, 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 0.030
- Jet #212529 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.044
- Rich Navy #001219 ΔE 0.061
- Navy Blue #001146 ΔE 0.076
- Space Cadet #2B2D42 ΔE 0.079
- Almost Black #070D0D ΔE 0.080
Use #101E2A 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.