#10122F
Closest named color: Rich Black (#0D1B2A). oklch(19.9% 0.057 276.9), rgb(16, 18, 47).
Aa
White text reads best on this color (18.26:1).
About this color
#10122F is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.057 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.035 away. White text reads best on it, at 18.26:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.14:1 |
| White text | 18.26:1 |
Values
| HEX | #10122F |
| RGB | rgb(16, 18, 47) |
| HSL | hsl(236, 49%, 12%) |
| OKLCH | oklch(19.9% 0.057 276.9) |
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 #10122F | 18.26:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #10122F | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #10122F text on white | 18.26:1 | AAA | Lc 104.8 | Preferred for body text |
| #10122F text on black | 1.14:1 | 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D2D7F2
oklch(88.4% 0.037 277.3)
-
Step 300
300
#B5BDED
oklch(80.9% 0.068 277.4)
-
Step 400
400
#8F9AE3
oklch(70.6% 0.107 276.7)
-
Step 500
500
#757FDB
oklch(63% 0.138 277)
-
Step 600
600
#5F67C9
oklch(55.6% 0.15 276.9)
-
Step 700
700
#4F55AE
oklch(49.1% 0.14 277.1)
-
Step 800
800
#40468D
oklch(42.7% 0.116 276.7)
-
Step 900
900
#363B70
oklch(37.6% 0.09 277.1)
-
Step 950
950 (this color)
#10122F
oklch(19.9% 0.057 276.9)
#10122F 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) | #041630 | 0.020 |
| Deuteranopia (no green cones) | #02142E | 0.022 |
| Tritanopia (no blue cones) | #03181E | 0.049 |
| Achromatopsia (no color) | #151515 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10122F
#10122F
oklch(19.9% 0.057 276.9)
- #1B1600
#1B1600
oklch(20% 0.041 98.4)
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 #10122F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.035
- Navy Blue #001146 ΔE 0.050
- Rich Navy #001219 ΔE 0.055
- Dark Navy #000435 ΔE 0.058
- Night Blue #040348 ΔE 0.065
- Midnight #03012D ΔE 0.065
- Midnight Purple #280137 ΔE 0.066
- Dark #1B2431 ΔE 0.067
Use #10122F 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.