#043C49
Closest named color: Midnight Green (#073B4C). oklch(33% 0.057 218.6), rgb(4, 60, 73).
Aa
White text reads best on this color (12.01:1).
About this color
#043C49 is a dark, muted teal or cyan. In OKLCH its lightness is 33%, its chroma 0.057 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.007 away. White text reads best on it, at 12.01:1.
| Hue family | Teals and cyans |
| Lightness | dark (33%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.74:1 |
| White text | 12.01:1 |
Values
| HEX | #043C49 |
| RGB | rgb(4, 60, 73) |
| HSL | hsl(191, 90%, 15%) |
| OKLCH | oklch(33% 0.057 218.6) |
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 #043C49 | 12.01:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #043C49 | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #043C49 text on white | 12.01:1 | AAA | Lc 97.1 | Preferred for body text |
| #043C49 text on black | 1.74:1 | 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
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C9DDE4
oklch(88.5% 0.023 220.8)
-
Step 300
300
#A3C8D3
oklch(81% 0.042 217.8)
-
Step 400
400
#6EABBE
oklch(70.7% 0.069 219.6)
-
Step 500
500
#4196AD
oklch(63% 0.088 218.5)
-
Step 600
600
#158099
oklch(55.6% 0.096 218.9)
-
Step 700
700
#006C82
oklch(49.1% 0.088 218.4)
-
Step 800
800
#0B586A
oklch(42.7% 0.073 218.9)
-
Step 900
900 (this color)
#043C49
oklch(33% 0.057 218.6)
-
Step 950
950
#0F2B32
oklch(27.1% 0.036 216.6)
#043C49 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) | #343A4A | 0.049 |
| Deuteranopia (no green cones) | #2B3449 | 0.043 |
| Tritanopia (no blue cones) | #004040 | 0.025 |
| Achromatopsia (no color) | #363636 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043C49
#043C49
oklch(33% 0.057 218.6)
- #4E2A1F
#4E2A1F
oklch(32.9% 0.057 37.8)
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 #043C49, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.007
- Dark Blue Grey #1F3B4D ΔE 0.023
- Prussian Blue #1D3557 ΔE 0.043
- Gunmetal #293241 ΔE 0.043
- Charcoal #264653 ΔE 0.048
- Onyx #343A40 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.057
Use #043C49 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.