#003B43
Closest named color: Midnight Green (#073B4C). oklch(32.3% 0.056 209.6), rgb(0, 59, 67).
Aa
White text reads best on this color (12.30:1).
About this color
#003B43 is a dark, muted teal or cyan. In OKLCH its lightness is 32%, its chroma 0.056 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 12.30:1.
| Hue family | Teals and cyans |
| Lightness | dark (32%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.70:1 |
| White text | 12.30:1 |
Values
| HEX | #003B43 |
| RGB | rgb(0, 59, 67) |
| HSL | hsl(187, 100%, 13%) |
| OKLCH | oklch(32.3% 0.056 209.6) |
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 #003B43 | 12.30:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #003B43 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #003B43 text on white | 12.30:1 | AAA | Lc 97.6 | Preferred for body text |
| #003B43 text on black | 1.70:1 | 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
#DCEEF1
oklch(93.7% 0.019 208.8)
-
Step 200
200
#BEE0E6
oklch(88.4% 0.037 209.4)
-
Step 300
300
#8ECDD8
oklch(81% 0.066 209.6)
-
Step 400
400
#3CB2C4
oklch(70.6% 0.105 209.6)
-
Step 500
500
#009BAD
oklch(63.1% 0.109 209.2)
-
Step 600
600
#008292
oklch(55.6% 0.096 209.8)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#004B54
oklch(37.8% 0.065 208.5)
-
Step 950
950 (this color)
#003B43
oklch(32.3% 0.056 209.6)
#003B43 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) | #343843 | 0.052 |
| Deuteranopia (no green cones) | #2C3243 | 0.048 |
| Tritanopia (no blue cones) | #003F3D | 0.020 |
| Achromatopsia (no color) | #353535 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #003B43
#003B43
oklch(32.3% 0.056 209.6)
- #4C2822
#4C2822
oklch(32.3% 0.055 30.4)
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 #003B43, 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 0.044
- Onyx #343A40 ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.051
- Charcoal #264653 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.058
- Dark Teal #014D4E ΔE 0.061
Use #003B43 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.