#637072
Closest named color: Dim Gray (#696969). oklch(53.5% 0.016 207.8), rgb(99, 112, 114).
Aa
White text reads best on this color (5.13:1).
About this color
#637072 is a medium-dark close to neutral grey. In OKLCH its lightness is 53%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Dim Gray (#696969), ΔE 0.021 away. White text reads best on it, at 5.13:1.
| Hue family | Neutrals |
| Lightness | medium-dark (53%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Dim Gray (#696969) |
| Black text | 4.09:1 |
| White text | 5.13:1 |
Values
| HEX | #637072 |
| RGB | rgb(99, 112, 114) |
| HSL | hsl(188, 7%, 42%) |
| OKLCH | oklch(53.5% 0.016 207.8) |
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 #637072 | 5.13:1 | AA | Lc -80.8 | Fine for body text |
| Black text on #637072 | 4.09:1 | AA large text | Lc 28.7 | Dividers and decoration only |
| #637072 text on white | 5.13:1 | AA | Lc 75.4 | Fine for body text |
| #637072 text on black | 4.09:1 | AA large text | Lc -26.3 | 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
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#E8EAEA
oklch(93.6% 0.002 197.1)
-
Step 200
200
#D6DADA
oklch(88.5% 0.004 197.1)
-
Step 300
300
#BCC2C3
oklch(81% 0.007 208.8)
-
Step 400
400
#99A3A4
oklch(70.8% 0.011 204.1)
-
Step 500
500
#808C8E
oklch(63.1% 0.014 208.7)
-
Step 600
600 (this color)
#637072
oklch(53.5% 0.016 207.8)
-
Step 700
700
#576365
oklch(49% 0.015 208.7)
-
Step 800
800
#485152
oklch(42.7% 0.012 204.8)
-
Step 900
900
#3C4344
oklch(37.7% 0.009 207.1)
-
Step 950
950
#232728
oklch(26.9% 0.006 214.4)
#637072 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) | #6E6F72 | 0.016 |
| Deuteranopia (no green cones) | #6B6D72 | 0.014 |
| Tritanopia (no blue cones) | #5F7171 | 0.007 |
| Achromatopsia (no color) | #6E6E6E | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637072
#637072
oklch(53.5% 0.016 207.8)
- #766A68
#766A68
oklch(53.5% 0.016 29)
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 #637072, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dim Gray #696969 ΔE 0.021
- Battleship Gray #6C757D ΔE 0.025
- Battleship Grey #6B7C85 ΔE 0.042
- Slate #516572 ΔE 0.044
- Metallic Blue #4F738E ΔE 0.047
- Grey Blue #647D8E ΔE 0.049
- Grey Brown #7F7053 ΔE 0.059
- Steel Grey #6F828A ΔE 0.060
Use #637072 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.