#033739
Closest named color: Midnight Green (#073B4C). oklch(30.7% 0.05 198.9), rgb(3, 55, 57).
Aa
White text reads best on this color (13.04:1).
About this color
#033739 is a dark, muted teal or cyan. In OKLCH its lightness is 31%, its chroma 0.050 and its hue 199°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.035 away. White text reads best on it, at 13.04:1.
| Hue family | Teals and cyans |
| Lightness | dark (31%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.60:1 |
| White text | 13.04:1 |
Values
| HEX | #033739 |
| RGB | rgb(3, 55, 57) |
| HSL | hsl(182, 90%, 12%) |
| OKLCH | oklch(30.7% 0.05 198.9) |
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 #033739 | 13.04:1 | AAA | Lc -102.3 | Preferred for body text |
| Black text on #033739 | 1.60:1 | Fails | Lc 0.0 | Not readable |
| #033739 text on white | 13.04:1 | AAA | Lc 99.0 | Preferred for body text |
| #033739 text on black | 1.60:1 | 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
#F0F7F7
oklch(97.1% 0.007 197)
-
Step 100
100
#DDEEEE
oklch(93.7% 0.018 196.8)
-
Step 200
200
#C1E0E1
oklch(88.4% 0.033 199)
-
Step 300
300
#93CDCF
oklch(80.9% 0.06 198.7)
-
Step 400
400
#4AB3B7
oklch(70.8% 0.096 198.7)
-
Step 500
500
#009DA2
oklch(63.2% 0.107 198.8)
-
Step 600
600
#008488
oklch(55.7% 0.095 198.5)
-
Step 700
700
#006F72
oklch(49.2% 0.084 198.1)
-
Step 800
800
#005B5E
oklch(42.8% 0.073 198.7)
-
Step 900
900
#004C4E
oklch(37.8% 0.064 197.8)
-
Step 950
950 (this color)
#033739
oklch(30.7% 0.05 198.9)
#033739 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) | #323439 | 0.051 |
| Deuteranopia (no green cones) | #2B2F39 | 0.047 |
| Tritanopia (no blue cones) | #003937 | 0.009 |
| Achromatopsia (no color) | #313131 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #033739
#033739
oklch(30.7% 0.05 198.9)
- #462525
#462525
oklch(30.8% 0.05 20.4)
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 #033739, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.035
- Gunmetal #293241 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.046
- Onyx #343A40 ΔE 0.058
- Space Cadet #2B2D42 ΔE 0.058
- Pakistan Green #283618 ΔE 0.059
- Oxford Blue #1B263B ΔE 0.062
- Prussian Blue #1D3557 ΔE 0.063
Use #033739 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.