#636D7E
Closest named color: Battleship Gray (#6C757D). oklch(53.2% 0.029 261.1), rgb(99, 109, 126).
Aa
White text reads best on this color (5.22:1).
About this color
#636D7E is a medium-dark close to neutral grey. In OKLCH its lightness is 53%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Battleship Gray (#6C757D), ΔE 0.029 away. White text reads best on it, at 5.22:1.
| Hue family | Neutrals |
| Lightness | medium-dark (53%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.01:1 |
| White text | 5.22:1 |
Values
| HEX | #636D7E |
| RGB | rgb(99, 109, 126) |
| HSL | hsl(218, 12%, 44%) |
| OKLCH | oklch(53.2% 0.029 261.1) |
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 #636D7E | 5.22:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #636D7E | 4.01:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #636D7E text on white | 5.22:1 | AA | Lc 75.9 | Fine for body text |
| #636D7E text on black | 4.01:1 | AA large text | Lc -25.8 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAEC
oklch(93.6% 0.003 247.9)
-
Step 200
200
#D6D9DE
oklch(88.4% 0.008 260.7)
-
Step 300
300
#BCC1C9
oklch(80.9% 0.013 259.8)
-
Step 400
400
#99A1AE
oklch(70.7% 0.021 260.2)
-
Step 500
500
#808A9A
oklch(63.1% 0.027 259.8)
-
Step 600
600 (this color)
#636D7E
oklch(53.2% 0.029 261.1)
-
Step 700
700
#586171
oklch(49.1% 0.028 262)
-
Step 800
800
#484F5C
oklch(42.6% 0.023 262.9)
-
Step 900
900
#3C424B
oklch(37.7% 0.017 258.4)
-
Step 950
950
#23272C
oklch(27.1% 0.011 254)
#636D7E 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) | #686E7F | 0.008 |
| Deuteranopia (no green cones) | #656B7E | 0.006 |
| Tritanopia (no blue cones) | #5C7072 | 0.026 |
| Achromatopsia (no color) | #6C6C6C | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #636D7E
#636D7E
oklch(53.2% 0.029 261.1)
- #756B5A
#756B5A
oklch(53.2% 0.029 81)
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 #636D7E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.029
- Dim Gray #696969 ΔE 0.032
- Metallic Blue #4F738E ΔE 0.033
- Slate #516572 ΔE 0.039
- Battleship Grey #6B7C85 ΔE 0.046
- Grey Blue #647D8E ΔE 0.047
- Dull Blue #49759C ΔE 0.052
- Stormy Blue #507B9C ΔE 0.054
Use #636D7E 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.