#455457
Closest named color: Dark Slate Gray (#2F4F4F). oklch(43.4% 0.019 211.1), rgb(69, 84, 87).
Aa
White text reads best on this color (7.89:1).
About this color
#455457 is a dark close to neutral grey. In OKLCH its lightness is 43%, its chroma 0.019. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.037 away. White text reads best on it, at 7.89:1.
| Hue family | Neutrals |
| Lightness | dark (43%) |
| Chroma | close to neutral grey (0.019) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.65:1 |
| White text | 7.89:1 |
Values
| HEX | #455457 |
| RGB | rgb(69, 84, 87) |
| HSL | hsl(190, 12%, 31%) |
| OKLCH | oklch(43.4% 0.019 211.1) |
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 #455457 | 7.89:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #455457 | 2.65:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #455457 text on white | 7.89:1 | AAA | Lc 87.4 | Fine for body text |
| #455457 text on black | 2.65:1 | Fails | Lc -14.7 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EAEB
oklch(93.5% 0.004 219.5)
-
Step 200
200
#D5DADB
oklch(88.5% 0.006 211)
-
Step 300
300
#B9C3C5
oklch(81% 0.011 211)
-
Step 400
400
#94A4A7
oklch(70.7% 0.019 210.2)
-
Step 500
500
#7A8E91
oklch(63.2% 0.023 207.6)
-
Step 600
600
#63787C
oklch(55.7% 0.025 210.5)
-
Step 700
700
#526568
oklch(49.2% 0.023 208.1)
-
Step 800
800 (this color)
#455457
oklch(43.4% 0.019 211.1)
-
Step 900
900
#394446
oklch(37.8% 0.015 209.8)
-
Step 950
950
#212829
oklch(27% 0.01 207.1)
#455457 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) | #515357 | 0.018 |
| Deuteranopia (no green cones) | #4E5057 | 0.017 |
| Tritanopia (no blue cones) | #405555 | 0.009 |
| Achromatopsia (no color) | #515151 | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455457
#455457
oklch(43.4% 0.019 211.1)
- #5B4D4A
#5B4D4A
oklch(43.3% 0.02 32.1)
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 #455457, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.037
- YInMn Blue #415A77 ΔE 0.051
- Dusty Grape #545775 ΔE 0.056
- Deep Teal #00555A ΔE 0.056
- Petrol #005F6A ΔE 0.058
- Dark Green Blue #1F6357 ΔE 0.058
- Slate #516572 ΔE 0.063
- Dark Grey Blue #29465B ΔE 0.064
Use #455457 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.