#043C4F
Closest named color: Midnight Green (#073B4C). oklch(33.3% 0.062 227.5), rgb(4, 60, 79).
Aa
White text reads best on this color (11.90:1).
About this color
#043C4F is a dark, muted teal or cyan. In OKLCH its lightness is 33%, its chroma 0.062 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.005 away. White text reads best on it, at 11.90:1.
| Hue family | Teals and cyans |
| Lightness | dark (33%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.76:1 |
| White text | 11.90:1 |
Values
| HEX | #043C4F |
| RGB | rgb(4, 60, 79) |
| HSL | hsl(195, 90%, 16%) |
| OKLCH | oklch(33.3% 0.062 227.5) |
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 #043C4F | 11.90:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #043C4F | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #043C4F text on white | 11.90:1 | AAA | Lc 96.9 | Preferred for body text |
| #043C4F text on black | 1.76:1 | 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
#A2C7D8
oklch(80.8% 0.046 227.5)
-
Step 400
400
#6DAAC5
oklch(70.7% 0.074 227.8)
-
Step 500
500
#4095B7
oklch(63.2% 0.096 227.6)
-
Step 600
600
#127EA2
oklch(55.5% 0.103 227.6)
-
Step 700
700
#006B8B
oklch(49.2% 0.095 227.3)
-
Step 800
800
#085771
oklch(42.7% 0.08 227.5)
-
Step 900
900 (this color)
#043C4F
oklch(33.3% 0.062 227.5)
-
Step 950
950
#0E2A35
oklch(26.9% 0.039 226.8)
#043C4F 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) | #323B50 | 0.045 |
| Deuteranopia (no green cones) | #28344F | 0.039 |
| Tritanopia (no blue cones) | #004142 | 0.033 |
| Achromatopsia (no color) | #373737 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043C4F
#043C4F
oklch(33.3% 0.062 227.5)
- #502B18
#502B18
oklch(33.3% 0.063 46.9)
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 #043C4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.005
- Dark Blue Grey #1F3B4D ΔE 0.020
- Prussian Blue #1D3557 ΔE 0.034
- Gunmetal #293241 ΔE 0.044
- Charcoal #264653 ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.051
- Onyx #343A40 ΔE 0.052
- Marine Blue #01386A ΔE 0.053
Use #043C4F 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.