#042A28
Closest named color: Jet (#212529). oklch(25.9% 0.041 189.7), rgb(4, 42, 40).
Aa
White text reads best on this color (15.36:1).
About this color
#042A28 is a dark, muted teal or cyan. In OKLCH its lightness is 26%, its chroma 0.041 and its hue 190°. Its hue sits on the cool side of the wheel. The nearest named color is Jet (#212529), ΔE 0.037 away. White text reads best on it, at 15.36:1.
| Hue family | Teals and cyans |
| Lightness | dark (26%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Jet (#212529) |
| Black text | 1.36:1 |
| White text | 15.36:1 |
Values
| HEX | #042A28 |
| RGB | rgb(4, 42, 40) |
| HSL | hsl(177, 83%, 9%) |
| OKLCH | oklch(25.9% 0.041 189.7) |
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 #042A28 | 15.36:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #042A28 | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #042A28 text on white | 15.36:1 | AAA | Lc 102.1 | Preferred for body text |
| #042A28 text on black | 1.36:1 | 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
#E0EDEC
oklch(93.6% 0.014 191.4)
-
Step 200
200
#C6DFDD
oklch(88.5% 0.027 190.8)
-
Step 300
300
#9DCBC7
oklch(80.8% 0.049 189.6)
-
Step 400
400
#62B1AB
oklch(70.8% 0.079 189.2)
-
Step 500
500
#269D97
oklch(63.2% 0.1 189.8)
-
Step 600
600
#00857F
oklch(55.6% 0.096 189.2)
-
Step 700
700
#00706B
oklch(49.2% 0.085 189.4)
-
Step 800
800
#005C58
oklch(42.8% 0.074 189.6)
-
Step 900
900
#004C49
oklch(37.6% 0.065 190.2)
-
Step 950
950 (this color)
#042A28
oklch(25.9% 0.041 189.7)
#042A28 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) | #272728 | 0.044 |
| Deuteranopia (no green cones) | #212328 | 0.041 |
| Tritanopia (no blue cones) | #002B29 | 0.004 |
| Achromatopsia (no color) | #252525 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #042A28
#042A28
oklch(25.9% 0.041 189.7)
- #351B1F
#351B1F
oklch(25.9% 0.041 10.5)
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 #042A28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.037
- Dark #1B2431 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.051
- Rich Black #0D1B2A ΔE 0.057
- Dark Forest Green #002D04 ΔE 0.062
- Very Dark Green #062E03 ΔE 0.063
- Gunmetal #293241 ΔE 0.071
- Pakistan Green #283618 ΔE 0.072
Use #042A28 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.