#04102A
Closest named color: Rich Navy (#001219). oklch(18% 0.056 261.7), rgb(4, 16, 42).
Aa
White text reads best on this color (18.87:1).
About this color
#04102A is a very dark, muted blue. In OKLCH its lightness is 18%, its chroma 0.056 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Navy (#001219), ΔE 0.039 away. White text reads best on it, at 18.87:1.
| 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 | 18.87:1 |
Values
| HEX | #04102A |
| RGB | rgb(4, 16, 42) |
| HSL | hsl(221, 83%, 9%) |
| OKLCH | oklch(18% 0.056 261.7) |
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 #04102A | 18.87:1 | AAA | Lc -107.3 | Preferred for body text |
| Black text on #04102A | 1.11:1 | Fails | Lc 0.0 | Not readable |
| #04102A text on white | 18.87:1 | AAA | Lc 105.2 | Preferred for body text |
| #04102A 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
#CCDAF2
oklch(88.5% 0.036 261.3)
-
Step 300
300
#A9C1ED
oklch(80.8% 0.068 262.5)
-
Step 400
400
#7BA1E3
oklch(70.8% 0.106 261.1)
-
Step 500
500
#5A87DB
oklch(63% 0.136 261.9)
-
Step 600
600
#4070C9
oklch(55.7% 0.148 261.5)
-
Step 700
700
#325DAE
oklch(49.1% 0.138 261.7)
-
Step 800
800
#2A4C8D
oklch(42.7% 0.115 262)
-
Step 900
900
#264070
oklch(37.7% 0.089 261.6)
-
Step 950
950 (this color)
#04102A
oklch(18% 0.056 261.7)
#04102A 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) | #000F29 | 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°).
- #04102A
#04102A
oklch(18% 0.056 261.7)
- #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 #04102A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Navy #001219 ΔE 0.039
- Rich Black #0D1B2A ΔE 0.044
- Dark Navy #000435 ΔE 0.044
- Dark Navy Blue #00022E ΔE 0.050
- Midnight #03012D ΔE 0.050
- Very Dark Blue #000133 ΔE 0.053
- Navy Blue #001146 ΔE 0.055
- Almost Black #070D0D ΔE 0.060
Use #04102A 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.