#0A1323
Closest named color: Rich Navy (#001219). oklch(18.7% 0.036 261.3), rgb(10, 19, 35).
Aa
White text reads best on this color (18.57:1).
About this color
#0A1323 is a very dark, muted blue. In OKLCH its lightness is 19%, its chroma 0.036 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.029 away. White text reads best on it, at 18.57:1.
| Hue family | Blues |
| Lightness | very dark (19%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.13:1 |
| White text | 18.57:1 |
Values
| HEX | #0A1323 |
| RGB | rgb(10, 19, 35) |
| HSL | hsl(218, 56%, 9%) |
| OKLCH | oklch(18.7% 0.036 261.3) |
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 #0A1323 | 18.57:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #0A1323 | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #0A1323 text on white | 18.57:1 | AAA | Lc 105.1 | Preferred for body text |
| #0A1323 text on black | 1.13:1 | 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
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D1DAE9
oklch(88.6% 0.023 260.7)
-
Step 300
300
#B2C1DD
oklch(80.9% 0.043 263)
-
Step 400
400
#89A1CB
oklch(70.6% 0.068 261.5)
-
Step 500
500
#6C8ABE
oklch(63.1% 0.086 261.1)
-
Step 600
600
#5473AA
oklch(55.6% 0.093 261.4)
-
Step 700
700
#446092
oklch(49% 0.087 261.4)
-
Step 800
800
#384F76
oklch(42.7% 0.071 260.6)
-
Step 900
900
#314260
oklch(37.9% 0.056 261.4)
-
Step 950
950 (this color)
#0A1323
oklch(18.7% 0.036 261.3)
#0A1323 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) | #0D1424 | 0.007 |
| Deuteranopia (no green cones) | #0A1223 | 0.004 |
| Tritanopia (no blue cones) | #011719 | 0.033 |
| Achromatopsia (no color) | #131313 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A1323
#0A1323
oklch(18.7% 0.036 261.3)
- #1B1101
#1B1101
oklch(18.6% 0.036 81.3)
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 #0A1323, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.029
- Rich Black #0D1B2A ΔE 0.031
- Almost Black #070D0D ΔE 0.048
- Dark Navy #000435 ΔE 0.066
- Midnight #03012D ΔE 0.070
- Dark Navy Blue #00022E ΔE 0.070
- Navy Blue #001146 ΔE 0.071
- Dark #1B2431 ΔE 0.071
Use #0A1323 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.