#455E51
Closest named color: Dark Green Blue (#1F6357). oklch(45.8% 0.037 161.8), rgb(69, 94, 81).
Aa
White text reads best on this color (7.06:1).
About this color
#455E51 is a medium-dark, muted green. In OKLCH its lightness is 46%, its chroma 0.037 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.037 away. White text reads best on it, at 7.06:1.
| Hue family | Greens |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.037) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.97:1 |
| White text | 7.06:1 |
Values
| HEX | #455E51 |
| RGB | rgb(69, 94, 81) |
| HSL | hsl(149, 15%, 32%) |
| OKLCH | oklch(45.8% 0.037 161.8) |
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 #455E51 | 7.06:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #455E51 | 2.97:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #455E51 text on white | 7.06:1 | AAA | Lc 84.5 | Fine for body text |
| #455E51 text on black | 2.97:1 | Fails | Lc -17.5 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D3DCD7
oklch(88.6% 0.012 162)
-
Step 300
300
#B5C5BC
oklch(80.9% 0.021 161.3)
-
Step 400
400
#8EA89A
oklch(70.8% 0.035 161.9)
-
Step 500
500
#729281
oklch(63.1% 0.044 161.6)
-
Step 600
600
#5A7C6B
oklch(55.5% 0.047 162.7)
-
Step 700
700
#4A6959
oklch(49.2% 0.044 161.7)
-
Step 800
800 (this color)
#455E51
oklch(45.8% 0.037 161.8)
-
Step 900
900
#34473D
oklch(37.8% 0.029 161.6)
-
Step 950
950
#1F2924
oklch(27% 0.017 163.4)
#455E51 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) | #5D5A50 | 0.036 |
| Deuteranopia (no green cones) | #595752 | 0.035 |
| Tritanopia (no blue cones) | #405E5A | 0.015 |
| Achromatopsia (no color) | #585858 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455E51
#455E51
oklch(45.8% 0.037 161.8)
- #664F5D
#664F5D
oklch(45.6% 0.037 341.6)
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 #455E51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.037
- Dark Aqua #05696B ΔE 0.056
- Slate #516572 ΔE 0.056
- Pine #2B5D34 ΔE 0.057
- Dark Slate Gray #2F4F4F ΔE 0.059
- Petrol #005F6A ΔE 0.059
- YInMn Blue #415A77 ΔE 0.068
- Deep Teal #00555A ΔE 0.068
Use #455E51 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.