#055E55
Closest named color: Dark Green Blue (#1F6357). oklch(43.4% 0.075 183.5), rgb(5, 94, 85).
Aa
White text reads best on this color (7.66:1).
About this color
#055E55 is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 43%, its chroma 0.075 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.022 away. White text reads best on it, at 7.66:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.73:1 |
| White text | 7.66:1 |
Values
| HEX | #055E55 |
| RGB | rgb(5, 94, 85) |
| HSL | hsl(174, 90%, 19%) |
| OKLCH | oklch(43.4% 0.075 183.5) |
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 #055E55 | 7.66:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #055E55 | 2.73:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #055E55 text on white | 7.66:1 | AAA | Lc 86.2 | Fine for body text |
| #055E55 text on black | 2.73:1 | Fails | Lc -15.9 | 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
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEB
oklch(93.7% 0.013 185.1)
-
Step 200
200
#C8DFDB
oklch(88.5% 0.025 184.2)
-
Step 300
300
#A2CAC3
oklch(80.8% 0.044 183.4)
-
Step 400
400
#6CAFA5
oklch(70.6% 0.07 183.8)
-
Step 500
500
#3D9B8F
oklch(63% 0.09 183.7)
-
Step 600
600
#048679
oklch(55.7% 0.098 183)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
Step 800
800 (this color)
#055E55
oklch(43.4% 0.075 183.5)
-
Step 900
900
#124C45
oklch(37.8% 0.059 183.4)
-
Step 950
950
#0D2C28
oklch(26.9% 0.037 183.8)
#055E55 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) | #595855 | 0.080 |
| Deuteranopia (no green cones) | #4E5056 | 0.076 |
| Tritanopia (no blue cones) | #00605B | 0.010 |
| Achromatopsia (no color) | #535353 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #055E55
#055E55
oklch(43.4% 0.075 183.5)
- #733E4C
#733E4C
oklch(43.4% 0.076 3.8)
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 #055E55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.022
- Deep Teal #00555A ΔE 0.034
- Petrol #005F6A ΔE 0.035
- Dark Blue Green #005249 ΔE 0.040
- Dark Aqua #05696B ΔE 0.044
- Spruce #0A5F38 ΔE 0.047
- Dark Slate Gray #2F4F4F ΔE 0.050
- Pine #2B5D34 ΔE 0.050
Use #055E55 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.