#042736
Closest named color: Dark (#1B2431). oklch(25.7% 0.048 231.3), rgb(4, 39, 54).
Aa
White text reads best on this color (15.57:1).
About this color
#042736 is a dark, muted blue. In OKLCH its lightness is 26%, its chroma 0.048 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.026 away. White text reads best on it, at 15.57:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.34:1 |
| White text | 15.57:1 |
Values
| HEX | #042736 |
| RGB | rgb(4, 39, 54) |
| HSL | hsl(198, 86%, 11%) |
| OKLCH | oklch(25.7% 0.048 231.3) |
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 #042736 | 15.57:1 | AAA | Lc -105.0 | Preferred for body text |
| Black text on #042736 | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #042736 text on white | 15.57:1 | AAA | Lc 102.3 | Preferred for body text |
| #042736 text on black | 1.34:1 | 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
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C5DDEA
oklch(88.4% 0.031 231.3)
-
Step 300
300
#9CC8DF
oklch(80.9% 0.057 231.1)
-
Step 400
400
#61ABCF
oklch(70.7% 0.091 231.1)
-
Step 500
500
#2895C3
oklch(63.1% 0.116 231.6)
-
Step 600
600
#007EA9
oklch(55.6% 0.112 231.2)
-
Step 700
700
#006A8F
oklch(49.2% 0.1 231.3)
-
Step 800
800
#005775
oklch(42.8% 0.086 230.3)
-
Step 900
900
#024862
oklch(37.7% 0.075 231.1)
-
Step 950
950 (this color)
#042736
oklch(25.7% 0.048 231.3)
#042736 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) | #1F2637 | 0.031 |
| Deuteranopia (no green cones) | #192236 | 0.027 |
| Tritanopia (no blue cones) | #002B2C | 0.028 |
| Achromatopsia (no color) | #242424 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #042736
#042736
oklch(25.7% 0.048 231.3)
- #351C0C
#351C0C
oklch(25.7% 0.047 51.8)
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 #042736, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.026
- Oxford Blue #1B263B ΔE 0.028
- Jet #212529 ΔE 0.039
- Rich Black #0D1B2A ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.060
- Gunmetal #293241 ΔE 0.064
- Midnight Green #073B4C ΔE 0.073
- Marine #042E60 ΔE 0.078
Use #042736 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.