#043A42
Closest named color: Midnight Green (#073B4C). oklch(32% 0.053 210.4), rgb(4, 58, 66).
Aa
White text reads best on this color (12.43:1).
About this color
#043A42 is a dark, muted teal or cyan. In OKLCH its lightness is 32%, its chroma 0.053 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.018 away. White text reads best on it, at 12.43:1.
| Hue family | Teals and cyans |
| Lightness | dark (32%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.68:1 |
| White text | 12.43:1 |
Values
| HEX | #043A42 |
| RGB | rgb(4, 58, 66) |
| HSL | hsl(188, 89%, 14%) |
| OKLCH | oklch(32% 0.053 210.4) |
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 #043A42 | 12.43:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #043A42 | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #043A42 text on white | 12.43:1 | AAA | Lc 97.9 | Preferred for body text |
| #043A42 text on black | 1.68:1 | 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
#EFF7F9
oklch(97.1% 0.009 214.3)
-
Step 100
100
#DDEDF1
oklch(93.5% 0.018 214.4)
-
Step 200
200
#C0E0E6
oklch(88.5% 0.035 210.2)
-
Step 300
300
#90CCD7
oklch(80.8% 0.063 210.2)
-
Step 400
400
#44B1C4
oklch(70.6% 0.101 211.1)
-
Step 500
500
#009BAE
oklch(63.2% 0.109 210)
-
Step 600
600
#008293
oklch(55.6% 0.096 210.7)
-
Step 700
700
#006D7C
oklch(49% 0.085 211.2)
-
Step 800
800
#005A66
oklch(42.9% 0.074 210.4)
-
Step 900
900
#004B55
oklch(37.8% 0.065 210)
-
Step 950
950 (this color)
#043A42
oklch(32% 0.053 210.4)
#043A42 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) | #333742 | 0.049 |
| Deuteranopia (no green cones) | #2B3242 | 0.044 |
| Tritanopia (no blue cones) | #003D3C | 0.018 |
| Achromatopsia (no color) | #343434 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #043A42
#043A42
oklch(32% 0.053 210.4)
- #4A2822
#4A2822
oklch(32% 0.053 30.9)
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 #043A42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.018
- Dark Blue Grey #1F3B4D ΔE 0.031
- Gunmetal #293241 ΔE 0.041
- Onyx #343A40 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.055
- Charcoal #264653 ΔE 0.057
- Dark Teal #014D4E ΔE 0.064
Use #043A42 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.