#05102A
Closest named color: Rich Navy (#001219). oklch(18.1% 0.056 263.3), rgb(5, 16, 42).
Aa
White text reads best on this color (18.85:1).
About this color
#05102A is a very dark, muted blue. In OKLCH its lightness is 18%, its chroma 0.056 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.040 away. White text reads best on it, at 18.85:1.
| Hue family | Blues |
| Lightness | very dark (18%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Rich Navy (#001219) |
| Black text | 1.11:1 |
| White text | 18.85:1 |
Values
| HEX | #05102A |
| RGB | rgb(5, 16, 42) |
| HSL | hsl(222, 79%, 9%) |
| OKLCH | oklch(18.1% 0.056 263.3) |
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 #05102A | 18.85:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #05102A | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #05102A text on white | 18.85:1 | AAA | Lc 105.2 | Preferred for body text |
| #05102A text on black | 1.11:1 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CDDAF2
oklch(88.6% 0.036 262.8)
-
Step 300
300
#ABC1EC
oklch(80.9% 0.066 263.7)
-
Step 400
400
#7EA0E3
oklch(70.7% 0.106 263.3)
-
Step 500
500
#5E87DB
oklch(63.2% 0.135 263.4)
-
Step 600
600
#446FC8
oklch(55.6% 0.146 263.1)
-
Step 700
700
#365CAD
oklch(49% 0.137 263.3)
-
Step 800
800
#2D4C8C
oklch(42.8% 0.112 263)
-
Step 900
900
#284070
oklch(37.8% 0.088 262.8)
-
Step 950
950 (this color)
#05102A
oklch(18.1% 0.056 263.3)
#05102A 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) | #03132B | 0.010 |
| Deuteranopia (no green cones) | #001029 | 0.010 |
| Tritanopia (no blue cones) | #00161A | 0.045 |
| Achromatopsia (no color) | #111111 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #05102A
#05102A
oklch(18.1% 0.056 263.3)
- #1A1000
#1A1000
oklch(18.2% 0.037 82.5)
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 #05102A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.040
- Rich Black #0D1B2A ΔE 0.043
- Dark Navy #000435 ΔE 0.045
- Dark Navy Blue #00022E ΔE 0.051
- Midnight #03012D ΔE 0.051
- Very Dark Blue #000133 ΔE 0.054
- Navy Blue #001146 ΔE 0.055
- Almost Black #070D0D ΔE 0.060
Use #05102A 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.