#455F5B
Closest named color: Dark Green Blue (#1F6357). oklch(46.3% 0.032 184.5), rgb(69, 95, 91).
Aa
White text reads best on this color (6.90:1).
About this color
#455F5B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.032 and its hue 184°. 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 6.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.04:1 |
| White text | 6.90:1 |
Values
| HEX | #455F5B |
| RGB | rgb(69, 95, 91) |
| HSL | hsl(171, 16%, 32%) |
| OKLCH | oklch(46.3% 0.032 184.5) |
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 #455F5B | 6.90:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #455F5B | 3.04:1 | AA large text | Lc 20.2 | Dividers and decoration only |
| #455F5B text on white | 6.90:1 | AA | Lc 83.9 | Fine for body text |
| #455F5B text on black | 3.04:1 | AA large text | Lc -18.1 | 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
#D3DBDA
oklch(88.5% 0.009 188.1)
-
Step 300
300
#B6C4C2
oklch(80.9% 0.016 186.6)
-
Step 400
400
#90A6A2
oklch(70.7% 0.025 183.4)
-
Step 500
500
#75908C
oklch(63.1% 0.031 185.4)
-
Step 600
600
#5D7A76
oklch(55.6% 0.034 185.8)
-
Step 700
700 (this color)
#455F5B
oklch(46.3% 0.032 184.5)
-
Step 800
800
#3F5451
oklch(42.7% 0.026 185.5)
-
Step 900
900
#364543
oklch(37.7% 0.02 186.4)
-
Step 950
950
#202927
oklch(27.2% 0.013 180.3)
#455F5B 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) | #5C5C5B | 0.033 |
| Deuteranopia (no green cones) | #58585B | 0.033 |
| Tritanopia (no blue cones) | #3D605E | 0.010 |
| Achromatopsia (no color) | #5A5A5A | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455F5B
#455F5B
oklch(46.3% 0.032 184.5)
- #695257
#695257
oklch(46.4% 0.032 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 #455F5B, 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 0.042
- Dark Aqua #05696B ΔE 0.050
- Petrol #005F6A ΔE 0.053
- YInMn Blue #415A77 ΔE 0.054
- Dusty Grape #545775 ΔE 0.061
- Dark Slate Gray #2F4F4F ΔE 0.061
- Dim Gray #696969 ΔE 0.066
Use #455F5B 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.