#003F48
Closest named color: Midnight Green (#073B4C). oklch(33.7% 0.058 210.6), rgb(0, 63, 72).
Aa
White text reads best on this color (11.63:1).
About this color
#003F48 is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.058 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.017 away. White text reads best on it, at 11.63:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.80:1 |
| White text | 11.63:1 |
Values
| HEX | #003F48 |
| RGB | rgb(0, 63, 72) |
| HSL | hsl(188, 100%, 14%) |
| OKLCH | oklch(33.7% 0.058 210.6) |
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 #003F48 | 11.63:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #003F48 | 1.80:1 | Fails | Lc 7.6 | Not readable |
| #003F48 text on white | 11.63:1 | AAA | Lc 96.3 | Preferred for body text |
| #003F48 text on black | 1.80:1 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C8DEE2
oklch(88.5% 0.024 209.8)
-
Step 300
300
#A1C9D1
oklch(81% 0.044 211.2)
-
Step 400
400
#6AADB9
oklch(70.7% 0.07 210.1)
-
Step 500
500
#3A98A8
oklch(63.1% 0.09 210.7)
-
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 (this color)
#003F48
oklch(33.7% 0.058 210.6)
-
Step 950
950
#0D2B31
oklch(27% 0.037 212.9)
#003F48 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) | #383C49 | 0.055 |
| Deuteranopia (no green cones) | #2F3648 | 0.049 |
| Tritanopia (no blue cones) | #004342 | 0.020 |
| Achromatopsia (no color) | #393939 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #003F48
#003F48
oklch(33.7% 0.058 210.6)
- #512B24
#512B24
oklch(33.7% 0.058 31.4)
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 #003F48, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.017
- Dark Blue Grey #1F3B4D ΔE 0.028
- Charcoal #264653 ΔE 0.043
- Dark Teal #014D4E ΔE 0.047
- Onyx #343A40 ΔE 0.049
- Gunmetal #293241 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.052
- Dark Grey Blue #29465B ΔE 0.053
Use #003F48 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.