#042D28
Closest named color: Jet (#212529). oklch(26.8% 0.045 182.9), rgb(4, 45, 40).
Aa
White text reads best on this color (14.88:1).
About this color
#042D28 is a dark, muted teal or cyan. In OKLCH its lightness is 27%, its chroma 0.045 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Jet (#212529), ΔE 0.042 away. White text reads best on it, at 14.88:1.
| Hue family | Teals and cyans |
| Lightness | dark (27%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Jet (#212529) |
| Black text | 1.41:1 |
| White text | 14.88:1 |
Values
| HEX | #042D28 |
| RGB | rgb(4, 45, 40) |
| HSL | hsl(173, 84%, 10%) |
| OKLCH | oklch(26.8% 0.045 182.9) |
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 #042D28 | 14.88:1 | AAA | Lc -104.4 | Preferred for body text |
| Black text on #042D28 | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #042D28 text on white | 14.88:1 | AAA | Lc 101.5 | Preferred for body text |
| #042D28 text on black | 1.41:1 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#DFEDEB
oklch(93.5% 0.015 186.7)
-
Step 200
200
#C5E0DB
oklch(88.5% 0.029 183.3)
-
Step 300
300
#9BCCC4
oklch(80.8% 0.052 183.9)
-
Step 400
400
#5EB2A5
oklch(70.7% 0.085 182.6)
-
Step 500
500
#189E8F
oklch(63% 0.108 182.8)
-
Step 600
600
#008679
oklch(55.7% 0.099 183.1)
-
Step 700
700
#007065
oklch(49% 0.087 183.1)
-
Step 800
800
#005C53
oklch(42.6% 0.076 183.4)
-
Step 900
900
#004D45
oklch(37.7% 0.067 183.1)
-
Step 950
950 (this color)
#042D28
oklch(26.8% 0.045 182.9)
#042D28 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) | #2A2A28 | 0.047 |
| Deuteranopia (no green cones) | #252628 | 0.044 |
| Tritanopia (no blue cones) | #002E2B | 0.006 |
| Achromatopsia (no color) | #272727 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #042D28
#042D28
oklch(26.8% 0.045 182.9)
- #381C24
#381C24
oklch(26.8% 0.045 2.3)
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 #042D28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.042
- Dark #1B2431 ΔE 0.047
- Oxford Blue #1B263B ΔE 0.056
- Dark Forest Green #002D04 ΔE 0.057
- Very Dark Green #062E03 ΔE 0.057
- Pakistan Green #283618 ΔE 0.062
- Gunmetal #293241 ΔE 0.067
- Rich Black #0D1B2A ΔE 0.068
Use #042D28 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.