#455B4B
Closest named color: Dark Green Blue (#1F6357). oklch(44.8% 0.037 153.2), rgb(69, 91, 75).
Aa
White text reads best on this color (7.36:1).
About this color
#455B4B is a dark, muted green. In OKLCH its lightness is 45%, its chroma 0.037 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.040 away. White text reads best on it, at 7.36:1.
| Hue family | Greens |
| Lightness | dark (45%) |
| Chroma | muted (0.037) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.85:1 |
| White text | 7.36:1 |
Values
| HEX | #455B4B |
| RGB | rgb(69, 91, 75) |
| HSL | hsl(136, 14%, 31%) |
| OKLCH | oklch(44.8% 0.037 153.2) |
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 #455B4B | 7.36:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #455B4B | 2.85:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #455B4B text on white | 7.36:1 | AAA | Lc 85.6 | Fine for body text |
| #455B4B text on black | 2.85:1 | Fails | Lc -16.5 | 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
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E7EBE8
oklch(93.6% 0.006 153.8)
-
Step 200
200
#D3DCD5
oklch(88.6% 0.014 152.6)
-
Step 300
300
#B7C5BA
oklch(80.9% 0.022 152.1)
-
Step 400
400
#91A796
oklch(70.6% 0.035 152.2)
-
Step 500
500
#75927D
oklch(63.1% 0.045 153.5)
-
Step 600
600
#5E7C66
oklch(55.6% 0.048 152.9)
-
Step 700
700
#4D6855
oklch(49% 0.044 153.9)
-
Step 800
800 (this color)
#455B4B
oklch(44.8% 0.037 153.2)
-
Step 900
900
#36463A
oklch(37.6% 0.029 152.5)
-
Step 950
950
#202922
oklch(27% 0.018 151.7)
#455B4B 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) | #5B574A | 0.034 |
| Deuteranopia (no green cones) | #57554C | 0.032 |
| Tritanopia (no blue cones) | #425A56 | 0.019 |
| Achromatopsia (no color) | #565656 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #455B4B
#455B4B
oklch(44.8% 0.037 153.2)
- #624D5E
#624D5E
oklch(44.8% 0.038 332.8)
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 #455B4B, 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
- Pine #2B5D34 ΔE 0.052
- Dark Slate Gray #2F4F4F ΔE 0.053
- Petrol #005F6A ΔE 0.063
- Dark Aqua #05696B ΔE 0.064
- Spruce #0A5F38 ΔE 0.065
- Deep Teal #00555A ΔE 0.066
- Slate #516572 ΔE 0.066
Use #455B4B 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.