#043C39
Closest named color: Midnight Green (#073B4C). oklch(32.2% 0.054 189.1), rgb(4, 60, 57).
Aa
White text reads best on this color (12.27:1).
About this color
#043C39 is a dark, muted teal or cyan. In OKLCH its lightness is 32%, its chroma 0.054 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.036 away. White text reads best on it, at 12.27:1.
| Hue family | Teals and cyans |
| Lightness | dark (32%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.71:1 |
| White text | 12.27:1 |
Values
| HEX | #043C39 |
| RGB | rgb(4, 60, 57) |
| HSL | hsl(177, 88%, 13%) |
| OKLCH | oklch(32.2% 0.054 189.1) |
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 #043C39 | 12.27:1 | AAA | Lc -101.2 | Preferred for body text |
| Black text on #043C39 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #043C39 text on white | 12.27:1 | AAA | Lc 97.6 | Preferred for body text |
| #043C39 text on black | 1.71:1 | 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
#EFF7F6
oklch(97% 0.009 188.1)
-
Step 100
100
#DDEEEC
oklch(93.6% 0.018 188.4)
-
Step 200
200
#C0E1DE
oklch(88.5% 0.035 189.8)
-
Step 300
300
#91CEC9
oklch(80.9% 0.063 189.6)
-
Step 400
400
#43B5AE
oklch(70.7% 0.102 189.4)
-
Step 500
500
#009E97
oklch(63.1% 0.109 189.2)
-
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
#005C57
oklch(42.8% 0.074 188.4)
-
Step 900
900
#004C49
oklch(37.6% 0.065 190.2)
-
Step 950
950 (this color)
#043C39
oklch(32.2% 0.054 189.1)
#043C39 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) | #383839 | 0.057 |
| Deuteranopia (no green cones) | #303339 | 0.052 |
| Tritanopia (no blue cones) | #003E3B | 0.007 |
| Achromatopsia (no color) | #353535 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043C39
#043C39
oklch(32.2% 0.054 189.1)
- #4B272D
#4B272D
oklch(32.2% 0.054 9.9)
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 #043C39, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.036
- Dark Blue Grey #1F3B4D ΔE 0.045
- Gunmetal #293241 ΔE 0.053
- Evergreen #05472A ΔE 0.053
- Onyx #343A40 ΔE 0.053
- Pakistan Green #283618 ΔE 0.054
- Dark Teal #014D4E ΔE 0.060
- Charcoal #264653 ΔE 0.062
Use #043C39 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.