#33574B
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.6% 0.047 170.8), rgb(51, 87, 75).
Aa
White text reads best on this color (8.05:1).
About this color
#33574B is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.047 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.030 away. White text reads best on it, at 8.05:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.60:1 |
| White text | 8.05:1 |
Values
| HEX | #33574B |
| RGB | rgb(51, 87, 75) |
| HSL | hsl(160, 26%, 27%) |
| OKLCH | oklch(42.6% 0.047 170.8) |
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 #33574B | 8.05:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #33574B | 2.60:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #33574B text on white | 8.05:1 | AAA | Lc 87.8 | Fine for body text |
| #33574B text on black | 2.60:1 | Fails | Lc -14.3 | 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 800.
-
Step 50
50
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5ECE9
oklch(93.7% 0.008 168.7)
-
Step 200
200
#D0DCD8
oklch(88.4% 0.014 174.1)
-
Step 300
300
#B0C7BE
oklch(81% 0.028 170.1)
-
Step 400
400
#86AA9D
oklch(70.7% 0.044 171)
-
Step 500
500
#679585
oklch(63.2% 0.056 170.8)
-
Step 600
600
#4D7F6E
oklch(55.6% 0.061 170.4)
-
Step 700
700
#3E6B5C
oklch(49% 0.056 170.6)
-
Step 800
800 (this color)
#33574B
oklch(42.6% 0.047 170.8)
-
Step 900
900
#2D483F
oklch(37.7% 0.036 171.3)
-
Step 950
950
#1B2A25
oklch(27% 0.022 171.9)
#33574B 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) | #55534A | 0.047 |
| Deuteranopia (no green cones) | #4F4E4C | 0.046 |
| Tritanopia (no blue cones) | #285853 | 0.015 |
| Achromatopsia (no color) | #505050 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33574B
#33574B
oklch(42.6% 0.047 170.8)
- #634452
#634452
oklch(42.6% 0.047 350.6)
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 #33574B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.030
- Dark Green Blue #1F6357 ΔE 0.038
- Dark Blue Green #005249 ΔE 0.041
- Deep Teal #00555A ΔE 0.041
- Pine #2B5D34 ΔE 0.047
- Petrol #005F6A ΔE 0.052
- Dark Teal #014D4E ΔE 0.054
- Spruce #0A5F38 ΔE 0.055
Use #33574B 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.