#042D33
Closest named color: Dark (#1B2431). oklch(27.3% 0.044 209.5), rgb(4, 45, 51).
Aa
White text reads best on this color (14.70:1).
About this color
#042D33 is a dark, muted teal or cyan. In OKLCH its lightness is 27%, its chroma 0.044 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.036 away. White text reads best on it, at 14.70:1.
| Hue family | Teals and cyans |
| Lightness | dark (27%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.42:1 |
| White text | 14.70:1 |
Values
| HEX | #042D33 |
| RGB | rgb(4, 45, 51) |
| HSL | hsl(188, 85%, 11%) |
| OKLCH | oklch(27.3% 0.044 209.5) |
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 #042D33 | 14.70:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #042D33 | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #042D33 text on white | 14.70:1 | AAA | Lc 101.3 | Preferred for body text |
| #042D33 text on black | 1.42:1 | 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
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DFEDEF
oklch(93.6% 0.015 207.1)
-
Step 200
200
#C4DFE4
oklch(88.5% 0.029 210)
-
Step 300
300
#9ACAD3
oklch(80.8% 0.052 210.3)
-
Step 400
400
#5BAFBD
oklch(70.7% 0.084 209.6)
-
Step 500
500
#0E9BAD
oklch(63.2% 0.107 209.5)
-
Step 600
600
#008292
oklch(55.6% 0.096 209.8)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#004B54
oklch(37.8% 0.065 208.5)
-
Step 950
950 (this color)
#042D33
oklch(27.3% 0.044 209.5)
#042D33 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) | #282B33 | 0.042 |
| Deuteranopia (no green cones) | #212633 | 0.038 |
| Tritanopia (no blue cones) | #00302F | 0.015 |
| Achromatopsia (no color) | #282828 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #042D33
#042D33
oklch(27.3% 0.044 209.5)
- #3A1F1A
#3A1F1A
oklch(27.4% 0.043 31.3)
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 #042D33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.036
- Jet #212529 ΔE 0.039
- Oxford Blue #1B263B ΔE 0.039
- Gunmetal #293241 ΔE 0.054
- Space Cadet #2B2D42 ΔE 0.057
- Midnight Green #073B4C ΔE 0.059
- Rich Black #0D1B2A ΔE 0.063
- Dark Blue Grey #1F3B4D ΔE 0.069
Use #042D33 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.