#003539
Closest named color: Midnight Green (#073B4C). oklch(30% 0.051 203), rgb(0, 53, 57).
Aa
White text reads best on this color (13.39:1).
About this color
#003539 is a dark, muted teal or cyan. In OKLCH its lightness is 30%, its chroma 0.051 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.037 away. White text reads best on it, at 13.39:1.
| Hue family | Teals and cyans |
| Lightness | dark (30%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.56:1 |
| White text | 13.39:1 |
Values
| HEX | #003539 |
| RGB | rgb(0, 53, 57) |
| HSL | hsl(184, 100%, 11%) |
| OKLCH | oklch(30% 0.051 203) |
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 #003539 | 13.39:1 | AAA | Lc -102.7 | Preferred for body text |
| Black text on #003539 | 1.56:1 | Fails | Lc 0.0 | Not readable |
| #003539 text on white | 13.39:1 | AAA | Lc 99.5 | Preferred for body text |
| #003539 text on black | 1.56:1 | 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
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DDEEEF
oklch(93.7% 0.018 201.1)
-
Step 200
200
#C0E0E3
oklch(88.4% 0.034 203.5)
-
Step 300
300
#92CDD2
oklch(81% 0.061 202.6)
-
Step 400
400
#48B2BB
oklch(70.6% 0.097 203)
-
Step 500
500
#009CA6
oklch(63.1% 0.107 202.8)
-
Step 600
600
#00838C
oklch(55.6% 0.095 203.3)
-
Step 700
700
#006E76
oklch(49.1% 0.084 203.6)
-
Step 800
800
#005A61
oklch(42.6% 0.073 204)
-
Step 900
900
#004B51
oklch(37.6% 0.064 204)
-
Step 950
950 (this color)
#003539
oklch(30% 0.051 203)
#003539 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) | #303239 | 0.052 |
| Deuteranopia (no green cones) | #282D39 | 0.046 |
| Tritanopia (no blue cones) | #003836 | 0.014 |
| Achromatopsia (no color) | #2F2F2F | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #003539
#003539
oklch(30% 0.051 203)
- #442322
#442322
oklch(30% 0.051 22.4)
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 #003539, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.037
- Gunmetal #293241 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.049
- Oxford Blue #1B263B ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.056
- Jet #212529 ΔE 0.059
- Dark #1B2431 ΔE 0.059
- Onyx #343A40 ΔE 0.062
Use #003539 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.