#043D4B
Closest named color: Midnight Green (#073B4C). oklch(33.4% 0.059 219.9), rgb(4, 61, 75).
Aa
White text reads best on this color (11.83:1).
About this color
#043D4B is a dark, muted teal or cyan. In OKLCH its lightness is 33%, its chroma 0.059 and its hue 220°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.008 away. White text reads best on it, at 11.83:1.
| Hue family | Teals and cyans |
| Lightness | dark (33%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.77:1 |
| White text | 11.83:1 |
Values
| HEX | #043D4B |
| RGB | rgb(4, 61, 75) |
| HSL | hsl(192, 90%, 15%) |
| OKLCH | oklch(33.4% 0.059 219.9) |
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 #043D4B | 11.83:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #043D4B | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #043D4B text on white | 11.83:1 | AAA | Lc 96.8 | Preferred for body text |
| #043D4B 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE4
oklch(88.4% 0.024 219.7)
-
Step 300
300
#A2C8D4
oklch(80.9% 0.044 219)
-
Step 400
400
#6DABBF
oklch(70.6% 0.07 220.4)
-
Step 500
500
#4096AF
oklch(63.1% 0.09 220.1)
-
Step 600
600
#11809B
oklch(55.6% 0.098 220.3)
-
Step 700
700
#006C83
oklch(49.1% 0.089 219.3)
-
Step 800
800
#08586B
oklch(42.7% 0.075 219.8)
-
Step 900
900 (this color)
#043D4B
oklch(33.4% 0.059 219.9)
-
Step 950
950
#0E2B33
oklch(27.1% 0.037 218.8)
#043D4B 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) | #343B4C | 0.048 |
| Deuteranopia (no green cones) | #2B354B | 0.042 |
| Tritanopia (no blue cones) | #004241 | 0.029 |
| Achromatopsia (no color) | #373737 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043D4B
#043D4B
oklch(33.4% 0.059 219.9)
- #502B1E
#502B1E
oklch(33.4% 0.059 40)
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 #043D4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.008
- Dark Blue Grey #1F3B4D ΔE 0.021
- Prussian Blue #1D3557 ΔE 0.042
- Charcoal #264653 ΔE 0.045
- Gunmetal #293241 ΔE 0.045
- Onyx #343A40 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.052
- Dark Teal #014D4E ΔE 0.054
Use #043D4B 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.