#637459
Closest named color: Grey Brown (#7F7053). oklch(53.7% 0.046 134), rgb(99, 116, 89).
Aa
White text reads best on this color (5.03:1).
About this color
#637459 is a medium-dark, muted green. In OKLCH its lightness is 54%, its chroma 0.046 and its hue 134°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grey Brown (#7F7053), ΔE 0.042 away. White text reads best on it, at 5.03:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.046) |
| Temperature | in between |
| Nearest name | Grey Brown (#7F7053) |
| Black text | 4.17:1 |
| White text | 5.03:1 |
Values
| HEX | #637459 |
| RGB | rgb(99, 116, 89) |
| HSL | hsl(98, 13%, 40%) |
| OKLCH | oklch(53.7% 0.046 134) |
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 #637459 | 5.03:1 | AA | Lc -80.2 | Fine for body text |
| Black text on #637459 | 4.17:1 | AA large text | Lc 29.3 | Dividers and decoration only |
| #637459 text on white | 5.03:1 | AA | Lc 74.8 | Content text, not long reading |
| #637459 text on black | 4.17:1 | AA large text | Lc -26.9 | 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 600.
-
Step 50
50
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#E8EBE7
oklch(93.7% 0.006 137.8)
-
Step 200
200
#D6DBD3
oklch(88.5% 0.012 133.4)
-
Step 300
300
#BBC4B6
oklch(80.9% 0.022 134.1)
-
Step 400
400
#98A591
oklch(70.6% 0.032 134.5)
-
Step 500
500
#7F8F76
oklch(63% 0.041 134.3)
-
Step 600
600 (this color)
#637459
oklch(53.7% 0.046 134)
-
Step 700
700
#57664E
oklch(49% 0.042 133.9)
-
Step 800
800
#475340
oklch(42.6% 0.034 134.1)
-
Step 900
900
#3C4536
oklch(37.7% 0.028 132.9)
-
Step 950
950
#232820
oklch(26.9% 0.016 133.7)
#637459 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) | #767057 | 0.029 |
| Deuteranopia (no green cones) | #746E5A | 0.030 |
| Tritanopia (no blue cones) | #63726D | 0.033 |
| Achromatopsia (no color) | #6F6F6F | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637459
#637459
oklch(53.7% 0.046 134)
- #786681
#786681
oklch(53.7% 0.047 314.4)
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 #637459, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Brown #7F7053 ΔE 0.042
- Dark Moss Green #606C38 ΔE 0.044
- Dim Gray #696969 ΔE 0.049
- Military Green #667C3E ΔE 0.049
- Muddy Green #657432 ΔE 0.050
- Dark Taupe #7F684E ΔE 0.050
- Dark Sage #598556 ΔE 0.054
- Dull Brown #876E4B ΔE 0.055
Use #637459 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.