#042B27
Closest named color: Jet (#212529). oklch(26.2% 0.043 184.9), rgb(4, 43, 39).
Aa
White text reads best on this color (15.21:1).
About this color
#042B27 is a dark, muted teal or cyan. In OKLCH its lightness is 26%, its chroma 0.043 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Jet (#212529), ΔE 0.039 away. White text reads best on it, at 15.21:1.
| Hue family | Teals and cyans |
| Lightness | dark (26%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Jet (#212529) |
| Black text | 1.38:1 |
| White text | 15.21:1 |
Values
| HEX | #042B27 |
| RGB | rgb(4, 43, 39) |
| HSL | hsl(174, 83%, 9%) |
| OKLCH | oklch(26.2% 0.043 184.9) |
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 #042B27 | 15.21:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #042B27 | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #042B27 text on white | 15.21:1 | AAA | Lc 101.9 | Preferred for body text |
| #042B27 text on black | 1.38:1 | 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
#E0EDEB
oklch(93.6% 0.014 185.9)
-
Step 200
200
#C6E0DB
oklch(88.6% 0.028 182.8)
-
Step 300
300
#9CCCC5
oklch(80.9% 0.051 185.2)
-
Step 400
400
#61B1A7
oklch(70.6% 0.081 185.1)
-
Step 500
500
#229E91
oklch(63.2% 0.104 184.2)
-
Step 600
600
#00867B
oklch(55.7% 0.098 184.8)
-
Step 700
700
#007067
oklch(49% 0.086 185.2)
-
Step 800
800
#005C54
oklch(42.7% 0.075 184.7)
-
Step 900
900
#004D46
oklch(37.8% 0.067 184.5)
-
Step 950
950 (this color)
#042B27
oklch(26.2% 0.043 184.9)
#042B27 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) | #282827 | 0.045 |
| Deuteranopia (no green cones) | #232427 | 0.043 |
| Tritanopia (no blue cones) | #002C2A | 0.006 |
| Achromatopsia (no color) | #262626 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #042B27
#042B27
oklch(26.2% 0.043 184.9)
- #361B22
#361B22
oklch(26.2% 0.044 3.9)
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 #042B27, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.039
- Dark #1B2431 ΔE 0.044
- Oxford Blue #1B263B ΔE 0.054
- Dark Forest Green #002D04 ΔE 0.058
- Very Dark Green #062E03 ΔE 0.059
- Rich Black #0D1B2A ΔE 0.062
- Pakistan Green #283618 ΔE 0.068
- Gunmetal #293241 ΔE 0.071
Use #042B27 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.