#043F39
Closest named color: Midnight Green (#073B4C). oklch(33.1% 0.057 184.1), rgb(4, 63, 57).
Aa
White text reads best on this color (11.82:1).
About this color
#043F39 is a dark, muted teal or cyan. In OKLCH its lightness is 33%, its chroma 0.057 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.041 away. White text reads best on it, at 11.82:1.
| Hue family | Teals and cyans |
| Lightness | dark (33%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.77:1 |
| White text | 11.82:1 |
Values
| HEX | #043F39 |
| RGB | rgb(4, 63, 57) |
| HSL | hsl(174, 88%, 13%) |
| OKLCH | oklch(33.1% 0.057 184.1) |
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 #043F39 | 11.82:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #043F39 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #043F39 text on white | 11.82:1 | AAA | Lc 96.8 | Preferred for body text |
| #043F39 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEB
oklch(93.7% 0.013 185.1)
-
Step 200
200
#C9DFDB
oklch(88.6% 0.024 183.7)
-
Step 300
300
#A3CAC4
oklch(80.9% 0.042 184.9)
-
Step 400
400
#6EAFA5
oklch(70.7% 0.068 183.5)
-
Step 500
500
#419B8F
oklch(63.2% 0.088 183.4)
-
Step 600
600
#14857A
oklch(55.6% 0.094 184.4)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
Step 800
800
#095C53
oklch(42.8% 0.073 183.2)
-
Step 900
900 (this color)
#043F39
oklch(33.1% 0.057 184.1)
-
Step 950
950
#0F2C28
oklch(27% 0.036 183.4)
#043F39 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) | #3B3B39 | 0.059 |
| Deuteranopia (no green cones) | #34353A | 0.058 |
| Tritanopia (no blue cones) | #00413D | 0.008 |
| Achromatopsia (no color) | #373737 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043F39
#043F39
oklch(33.1% 0.057 184.1)
- #4E2932
#4E2932
oklch(33.2% 0.056 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 #043F39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.041
- Evergreen #05472A ΔE 0.044
- Dark Blue Grey #1F3B4D ΔE 0.048
- Dark Teal #014D4E ΔE 0.052
- Pakistan Green #283618 ΔE 0.054
- Onyx #343A40 ΔE 0.054
- Charcoal #264653 ΔE 0.058
- Gunmetal #293241 ΔE 0.060
Use #043F39 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.