#637286
Closest named color: Battleship Gray (#6C757D). oklch(54.7% 0.036 255.7), rgb(99, 114, 134).
Aa
White text reads best on this color (4.90:1).
About this color
#637286 is a medium-dark, muted blue. In OKLCH its lightness is 55%, its chroma 0.036 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Gray (#6C757D), ΔE 0.023 away. White text reads best on it, at 4.90:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.28:1 |
| White text | 4.90:1 |
Values
| HEX | #637286 |
| RGB | rgb(99, 114, 134) |
| HSL | hsl(214, 15%, 46%) |
| OKLCH | oklch(54.7% 0.036 255.7) |
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 #637286 | 4.90:1 | AA | Lc -79.4 | Fine for body text |
| Black text on #637286 | 4.28:1 | AA large text | Lc 30.1 | Non-text elements, placeholder text |
| #637286 text on white | 4.90:1 | AA | Lc 74.0 | Content text, not long reading |
| #637286 text on black | 4.28:1 | AA large text | Lc -27.7 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAED
oklch(93.6% 0.005 258.3)
-
Step 200
200
#D5D9DF
oklch(88.4% 0.009 258.3)
-
Step 300
300
#BAC1CB
oklch(80.8% 0.016 257.2)
-
Step 400
400
#96A2B1
oklch(70.8% 0.026 254)
-
Step 500
500
#7C8B9E
oklch(63.1% 0.034 254.4)
-
Step 600
600 (this color)
#637286
oklch(54.7% 0.036 255.7)
-
Step 700
700
#546274
oklch(49.1% 0.034 254.8)
-
Step 800
800
#45505E
oklch(42.7% 0.027 254.6)
-
Step 900
900
#3A424D
oklch(37.6% 0.022 256.4)
-
Step 950
950
#22272D
oklch(27% 0.013 253)
#637286 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) | #6B7387 | 0.012 |
| Deuteranopia (no green cones) | #676F86 | 0.010 |
| Tritanopia (no blue cones) | #5A7678 | 0.031 |
| Achromatopsia (no color) | #717171 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637286
#637286
oklch(54.7% 0.036 255.7)
- #7D6E59
#7D6E59
oklch(54.6% 0.036 76.1)
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 #637286, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.023
- Metallic Blue #4F738E ΔE 0.027
- Grey Blue #647D8E ΔE 0.032
- Battleship Grey #6B7C85 ΔE 0.033
- Stormy Blue #507B9C ΔE 0.040
- Dull Blue #49759C ΔE 0.043
- Dim Gray #696969 ΔE 0.045
- Slate Gray #708090 ΔE 0.046
Use #637286 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.