#042B2F
Closest named color: Dark (#1B2431). oklch(26.5% 0.042 205.2), rgb(4, 43, 47).
Aa
White text reads best on this color (15.08:1).
About this color
#042B2F is a dark, muted teal or cyan. In OKLCH its lightness is 27%, its chroma 0.042 and its hue 205°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.034 away. White text reads best on it, at 15.08:1.
| Hue family | Teals and cyans |
| Lightness | dark (27%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.39:1 |
| White text | 15.08:1 |
Values
| HEX | #042B2F |
| RGB | rgb(4, 43, 47) |
| HSL | hsl(186, 84%, 10%) |
| OKLCH | oklch(26.5% 0.042 205.2) |
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 #042B2F | 15.08:1 | AAA | Lc -104.6 | Preferred for body text |
| Black text on #042B2F | 1.39:1 | Fails | Lc 0.0 | Not readable |
| #042B2F text on white | 15.08:1 | AAA | Lc 101.8 | Preferred for body text |
| #042B2F text on black | 1.39:1 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#DFEDEE
oklch(93.6% 0.015 202)
-
Step 200
200
#C5DFE2
oklch(88.5% 0.028 205.1)
-
Step 300
300
#9BCAD0
oklch(80.8% 0.05 205.9)
-
Step 400
400
#5FAFB8
oklch(70.7% 0.08 205)
-
Step 500
500
#1D9BA7
oklch(63.2% 0.102 205.1)
-
Step 600
600
#00838E
oklch(55.7% 0.095 205.2)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800
#005A62
oklch(42.7% 0.073 205.3)
-
Step 900
900
#004B52
oklch(37.7% 0.064 205.5)
-
Step 950
950 (this color)
#042B2F
oklch(26.5% 0.042 205.2)
#042B2F 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) | #26292F | 0.040 |
| Deuteranopia (no green cones) | #20242F | 0.038 |
| Tritanopia (no blue cones) | #002D2C | 0.011 |
| Achromatopsia (no color) | #262626 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #042B2F
#042B2F
oklch(26.5% 0.042 205.2)
- #371D1B
#371D1B
oklch(26.5% 0.041 24.9)
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 #042B2F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.034
- Jet #212529 ΔE 0.036
- Oxford Blue #1B263B ΔE 0.041
- Rich Black #0D1B2A ΔE 0.057
- Gunmetal #293241 ΔE 0.061
- Space Cadet #2B2D42 ΔE 0.063
- Midnight Green #073B4C ΔE 0.068
- Dark Forest Green #002D04 ΔE 0.073
Use #042B2F 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.