#355A51
Closest named color: Dark Green Blue (#1F6357). oklch(43.7% 0.045 176.8), rgb(53, 90, 81).
Aa
White text reads best on this color (7.68:1).
About this color
#355A51 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.045 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.030 away. White text reads best on it, at 7.68:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.73:1 |
| White text | 7.68:1 |
Values
| HEX | #355A51 |
| RGB | rgb(53, 90, 81) |
| HSL | hsl(165, 26%, 28%) |
| OKLCH | oklch(43.7% 0.045 176.8) |
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 #355A51 | 7.68:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #355A51 | 2.73:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #355A51 text on white | 7.68:1 | AAA | Lc 86.6 | Fine for body text |
| #355A51 text on black | 2.73:1 | Fails | Lc -15.5 | Dividers and decoration only |
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
#E5ECEA
oklch(93.7% 0.008 177.3)
-
Step 200
200
#D0DCD9
oklch(88.5% 0.014 179.4)
-
Step 300
300
#B0C7C0
oklch(81% 0.027 175.4)
-
Step 400
400
#85AAA0
oklch(70.8% 0.043 176.7)
-
Step 500
500
#669589
oklch(63.2% 0.054 176.8)
-
Step 600
600
#4C7F72
oklch(55.6% 0.059 176)
-
Step 700
700
#3C6B60
oklch(49.1% 0.055 177.1)
-
Step 800
800 (this color)
#355A51
oklch(43.7% 0.045 176.8)
-
Step 900
900
#2D4841
oklch(37.8% 0.035 176.2)
-
Step 950
950
#1A2A26
oklch(26.9% 0.023 177.2)
#355A51 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) | #575651 | 0.047 |
| Deuteranopia (no green cones) | #515152 | 0.046 |
| Tritanopia (no blue cones) | #295B57 | 0.014 |
| Achromatopsia (no color) | #535353 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355A51
#355A51
oklch(43.7% 0.045 176.8)
- #664752
#664752
oklch(43.6% 0.045 356.1)
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 #355A51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.030
- Dark Slate Gray #2F4F4F ΔE 0.037
- Deep Teal #00555A ΔE 0.044
- Petrol #005F6A ΔE 0.045
- Dark Blue Green #005249 ΔE 0.050
- Pine #2B5D34 ΔE 0.052
- Dark Aqua #05696B ΔE 0.054
- Spruce #0A5F38 ΔE 0.059
Use #355A51 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.