#455E59
Closest named color: Dark Green Blue (#1F6357). oklch(46% 0.031 181.2), rgb(69, 94, 89).
Aa
White text reads best on this color (7.00:1).
About this color
#455E59 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.031 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.040 away. White text reads best on it, at 7.00:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.99:1 |
| White text | 7.00:1 |
Values
| HEX | #455E59 |
| RGB | rgb(69, 94, 89) |
| HSL | hsl(168, 15%, 32%) |
| OKLCH | oklch(46% 0.031 181.2) |
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 #455E59 | 7.00:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #455E59 | 2.99:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #455E59 text on white | 7.00:1 | AAA | Lc 84.2 | Fine for body text |
| #455E59 text on black | 2.99:1 | Fails | Lc -17.7 | 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 700.
-
Step 50
50
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E7EBEA
oklch(93.7% 0.004 179.7)
-
Step 200
200
#D3DBD9
oklch(88.5% 0.009 179.6)
-
Step 300
300
#B7C4C1
oklch(80.9% 0.015 180.6)
-
Step 400
400
#91A6A1
oklch(70.7% 0.025 179.6)
-
Step 500
500
#76908A
oklch(63.1% 0.031 179.7)
-
Step 600
600
#5E7A74
oklch(55.6% 0.034 180.4)
-
Step 700
700 (this color)
#455E59
oklch(46% 0.031 181.2)
-
Step 800
800
#405450
oklch(42.8% 0.026 181.4)
-
Step 900
900
#364542
oklch(37.6% 0.02 181.7)
-
Step 950
950
#202927
oklch(27.2% 0.013 180.3)
#455E59 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) | #5C5B59 | 0.034 |
| Deuteranopia (no green cones) | #575859 | 0.030 |
| Tritanopia (no blue cones) | #3E5F5C | 0.009 |
| Achromatopsia (no color) | #595959 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455E59
#455E59
oklch(46% 0.031 181.2)
- #675157
#675157
oklch(46% 0.031 0.2)
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 #455E59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.040
- Slate #516572 ΔE 0.046
- Dark Aqua #05696B ΔE 0.052
- Petrol #005F6A ΔE 0.053
- YInMn Blue #415A77 ΔE 0.055
- Dark Slate Gray #2F4F4F ΔE 0.058
- Dusty Grape #545775 ΔE 0.062
- Deep Teal #00555A ΔE 0.066
Use #455E59 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.