#043E52
Closest named color: Midnight Green (#073B4C). oklch(34% 0.064 228.1), rgb(4, 62, 82).
Aa
White text reads best on this color (11.56:1).
About this color
#043E52 is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.064 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.013 away. White text reads best on it, at 11.56:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.81:1 |
| White text | 11.56:1 |
Values
| HEX | #043E52 |
| RGB | rgb(4, 62, 82) |
| HSL | hsl(195, 91%, 17%) |
| OKLCH | oklch(34% 0.064 228.1) |
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 #043E52 | 11.56:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #043E52 | 1.81:1 | Fails | Lc 7.7 | Not readable |
| #043E52 text on white | 11.56:1 | AAA | Lc 96.2 | Preferred for body text |
| #043E52 text on black | 1.81:1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C8DDE7
oklch(88.5% 0.026 227.9)
-
Step 300
300
#A1C7D9
oklch(80.8% 0.048 228.3)
-
Step 400
400
#6BAAC7
oklch(70.6% 0.077 229)
-
Step 500
500
#3D95B8
oklch(63.1% 0.098 227.8)
-
Step 600
600
#087FA4
oklch(55.7% 0.106 227.5)
-
Step 700
700
#006A8B
oklch(49% 0.096 228.3)
-
Step 800
800
#035772
oklch(42.7% 0.082 227.9)
-
Step 900
900 (this color)
#043E52
oklch(34% 0.064 228.1)
-
Step 950
950
#0D2A36
oklch(26.9% 0.041 228.4)
#043E52 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) | #333D53 | 0.045 |
| Deuteranopia (no green cones) | #2A3652 | 0.040 |
| Tritanopia (no blue cones) | #004445 | 0.036 |
| Achromatopsia (no color) | #393939 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043E52
#043E52
oklch(34% 0.064 228.1)
- #532D18
#532D18
oklch(34.1% 0.065 48.4)
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 #043E52, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.013
- Dark Blue Grey #1F3B4D ΔE 0.020
- Prussian Blue #1D3557 ΔE 0.036
- Charcoal #264653 ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.045
- Gunmetal #293241 ΔE 0.049
- Marine Blue #01386A ΔE 0.051
- Onyx #343A40 ΔE 0.052
Use #043E52 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.