#042436
Closest named color: Dark (#1B2431). oklch(24.8% 0.05 238.1), rgb(4, 36, 54).
Aa
White text reads best on this color (16.02:1).
About this color
#042436 is a very dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.050 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.027 away. White text reads best on it, at 16.02:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.31:1 |
| White text | 16.02:1 |
Values
| HEX | #042436 |
| RGB | rgb(4, 36, 54) |
| HSL | hsl(202, 86%, 11%) |
| OKLCH | oklch(24.8% 0.05 238.1) |
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 #042436 | 16.02:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #042436 | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #042436 text on white | 16.02:1 | AAA | Lc 102.8 | Preferred for body text |
| #042436 text on black | 1.31:1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C6DDED
oklch(88.5% 0.033 238.2)
-
Step 300
300
#9DC7E3
oklch(80.9% 0.06 237.7)
-
Step 400
400
#65A9D5
oklch(70.7% 0.095 238.5)
-
Step 500
500
#3193CA
oklch(63.2% 0.121 238.1)
-
Step 600
600
#007CB2
oklch(55.6% 0.123 237.7)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
Step 800
800
#00557C
oklch(42.7% 0.094 237.9)
-
Step 900
900
#094766
oklch(37.8% 0.078 237.4)
-
Step 950
950 (this color)
#042436
oklch(24.8% 0.05 238.1)
#042436 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) | #1B2437 | 0.027 |
| Deuteranopia (no green cones) | #141F36 | 0.023 |
| Tritanopia (no blue cones) | #00292A | 0.034 |
| Achromatopsia (no color) | #212121 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #042436
#042436
oklch(24.8% 0.05 238.1)
- #321A06
#321A06
oklch(24.6% 0.049 57.7)
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 #042436, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.027
- Oxford Blue #1B263B ΔE 0.030
- Rich Black #0D1B2A ΔE 0.035
- Jet #212529 ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.066
- Navy Blue #001146 ΔE 0.071
- Gunmetal #293241 ΔE 0.072
- Marine #042E60 ΔE 0.080
Use #042436 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.