#63707B
Closest named color: Battleship Gray (#6C757D). oklch(53.8% 0.023 243.7), rgb(99, 112, 123).
Aa
White text reads best on this color (5.07:1).
About this color
#63707B is a medium-dark close to neutral grey. In OKLCH its lightness is 54%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Battleship Gray (#6C757D), ΔE 0.021 away. White text reads best on it, at 5.07:1.
| Hue family | Neutrals |
| Lightness | medium-dark (54%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #63707B |
| RGB | rgb(99, 112, 123) |
| HSL | hsl(208, 11%, 44%) |
| OKLCH | oklch(53.8% 0.023 243.7) |
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 #63707B | 5.07:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #63707B | 4.13:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #63707B text on white | 5.07:1 | AA | Lc 75.1 | Fine for body text |
| #63707B text on black | 4.13:1 | AA large text | Lc -26.6 | 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
#E8EAEC
oklch(93.6% 0.003 247.9)
-
Step 200
200
#D6DADD
oklch(88.6% 0.006 239.8)
-
Step 300
300
#BBC1C7
oklch(80.8% 0.011 248)
-
Step 400
400
#98A2AA
oklch(70.7% 0.016 241.9)
-
Step 500
500
#7F8B96
oklch(63.1% 0.022 245.8)
-
Step 600
600 (this color)
#63707B
oklch(53.8% 0.023 243.7)
-
Step 700
700
#57626C
oklch(49% 0.021 245.7)
-
Step 800
800
#475058
oklch(42.6% 0.018 245)
-
Step 900
900
#3B4349
oklch(37.8% 0.015 240.3)
-
Step 950
950
#23272B
oklch(27% 0.009 248.2)
#63707B 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) | #6C707C | 0.013 |
| Deuteranopia (no green cones) | #696D7B | 0.012 |
| Tritanopia (no blue cones) | #5D7373 | 0.020 |
| Achromatopsia (no color) | #6E6E6E | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63707B
#63707B
oklch(53.8% 0.023 243.7)
- #786C60
#786C60
oklch(53.9% 0.024 67.3)
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 #63707B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.021
- Dim Gray #696969 ΔE 0.029
- Metallic Blue #4F738E ΔE 0.036
- Battleship Grey #6B7C85 ΔE 0.038
- Grey Blue #647D8E ΔE 0.041
- Slate #516572 ΔE 0.044
- Stormy Blue #507B9C ΔE 0.054
- Slate Gray #708090 ΔE 0.055
Use #63707B 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.