#637561
Closest named color: Dim Gray (#696969). oklch(54.2% 0.037 142.3), rgb(99, 117, 97).
Aa
White text reads best on this color (4.94:1).
About this color
#637561 is a medium-dark, muted green. In OKLCH its lightness is 54%, its chroma 0.037 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dim Gray (#696969), ΔE 0.043 away. White text reads best on it, at 4.94:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.037) |
| Temperature | in between |
| Nearest name | Dim Gray (#696969) |
| Black text | 4.24:1 |
| White text | 4.94:1 |
Values
| HEX | #637561 |
| RGB | rgb(99, 117, 97) |
| HSL | hsl(114, 9%, 42%) |
| OKLCH | oklch(54.2% 0.037 142.3) |
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 #637561 | 4.94:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #637561 | 4.24:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #637561 text on white | 4.94:1 | AA | Lc 74.2 | Content text, not long reading |
| #637561 text on black | 4.24:1 | AA large text | Lc -27.5 | 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 600.
-
Step 50
50
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E8EBE8
oklch(93.7% 0.005 145.5)
-
Step 200
200
#D6DBD5
oklch(88.6% 0.01 140.5)
-
Step 300
300
#BBC4BA
oklch(81% 0.017 142.5)
-
Step 400
400
#97A596
oklch(70.6% 0.027 143.4)
-
Step 500
500
#7E8F7C
oklch(63.1% 0.034 142.3)
-
Step 600
600 (this color)
#637561
oklch(54.2% 0.037 142.3)
-
Step 700
700
#566654
oklch(49.1% 0.034 142)
-
Step 800
800
#465345
oklch(42.6% 0.028 143.2)
-
Step 900
900
#3B453A
oklch(37.8% 0.023 142.6)
-
Step 950
950
#232822
oklch(27% 0.013 140.5)
#637561 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) | #767160 | 0.029 |
| Deuteranopia (no green cones) | #736F62 | 0.029 |
| Tritanopia (no blue cones) | #62746F | 0.023 |
| Achromatopsia (no color) | #707070 | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637561
#637561
oklch(54.2% 0.037 142.3)
- #7A687C
#7A687C
oklch(54.1% 0.038 322.9)
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 #637561, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.043
- Grey Brown #7F7053 ΔE 0.043
- Battleship Gray #6C757D ΔE 0.047
- Dark Taupe #7F684E ΔE 0.052
- Dark Moss Green #606C38 ΔE 0.055
- Battleship Grey #6B7C85 ΔE 0.056
- Dark Sage #598556 ΔE 0.057
- Dull Brown #876E4B ΔE 0.057
Use #637561 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.