#043F37
Closest named color: Evergreen (#05472A). oklch(33.1% 0.058 180.7), rgb(4, 63, 55).
Aa
White text reads best on this color (11.85:1).
About this color
#043F37 is a dark, muted teal or cyan. In OKLCH its lightness is 33%, its chroma 0.058 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Evergreen (#05472A), ΔE 0.041 away. White text reads best on it, at 11.85:1.
| Hue family | Teals and cyans |
| Lightness | dark (33%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Evergreen (#05472A) |
| Black text | 1.77:1 |
| White text | 11.85:1 |
Values
| HEX | #043F37 |
| RGB | rgb(4, 63, 55) |
| HSL | hsl(172, 88%, 13%) |
| OKLCH | oklch(33.1% 0.058 180.7) |
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 #043F37 | 11.85:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #043F37 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #043F37 text on white | 11.85:1 | AAA | Lc 96.8 | Preferred for body text |
| #043F37 text on black | 1.77:1 | 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 900.
-
Step 50
50
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C9DFDA
oklch(88.6% 0.024 180.6)
-
Step 300
300
#A3CAC2
oklch(80.9% 0.043 181.3)
-
Step 400
400
#6EAFA3
oklch(70.7% 0.069 181.2)
-
Step 500
500
#429B8C
oklch(63.1% 0.088 180.6)
-
Step 600
600
#148576
oklch(55.5% 0.096 180.9)
-
Step 700
700
#007163
oklch(49.2% 0.089 180.3)
-
Step 800
800
#0A5C51
oklch(42.7% 0.074 180.7)
-
Step 900
900 (this color)
#043F37
oklch(33.1% 0.058 180.7)
-
Step 950
950
#0F2C27
oklch(26.9% 0.036 180.5)
#043F37 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) | #3C3A37 | 0.062 |
| Deuteranopia (no green cones) | #343538 | 0.058 |
| Tritanopia (no blue cones) | #00403D | 0.010 |
| Achromatopsia (no color) | #373737 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043F37
#043F37
oklch(33.1% 0.058 180.7)
- #4D2834
#4D2834
oklch(33% 0.057 360)
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 #043F37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Evergreen #05472A ΔE 0.041
- Midnight Green #073B4C ΔE 0.045
- Pakistan Green #283618 ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.052
- Dark Teal #014D4E ΔE 0.054
- Onyx #343A40 ΔE 0.056
- Pine Green #0A481E ΔE 0.058
- Charcoal #264653 ΔE 0.061
Use #043F37 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.