#637296
Closest named color: Metallic Blue (#4F738E). oklch(55.4% 0.059 266.9), rgb(99, 114, 150).
Aa
White text reads best on this color (4.79:1).
About this color
#637296 is a medium-dark, muted blue. In OKLCH its lightness is 55%, its chroma 0.059 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.030 away. White text reads best on it, at 4.79:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.37:1 |
| White text | 4.79:1 |
Values
| HEX | #637296 |
| RGB | rgb(99, 114, 150) |
| HSL | hsl(222, 20%, 49%) |
| OKLCH | oklch(55.4% 0.059 266.9) |
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 #637296 | 4.79:1 | AA | Lc -78.7 | Fine for body text |
| Black text on #637296 | 4.37:1 | AA large text | Lc 30.8 | Non-text elements, placeholder text |
| #637296 text on white | 4.79:1 | AA | Lc 73.3 | Content text, not long reading |
| #637296 text on black | 4.37:1 | AA large text | Lc -28.4 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAEF
oklch(93.6% 0.007 260.7)
-
Step 200
200
#D5D9E3
oklch(88.5% 0.014 268.5)
-
Step 300
300
#B9C1D2
oklch(81% 0.026 265.6)
-
Step 400
400
#95A0BC
oklch(70.7% 0.043 268.4)
-
Step 500
500
#7B89AB
oklch(63.1% 0.054 267.4)
-
Step 600
600 (this color)
#637296
oklch(55.4% 0.059 266.9)
-
Step 700
700
#536081
oklch(49.2% 0.056 267.7)
-
Step 800
800
#444E68
oklch(42.6% 0.045 268.1)
-
Step 900
900
#394155
oklch(37.6% 0.036 267.7)
-
Step 950
950
#212632
oklch(26.9% 0.024 267.1)
#637296 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) | #667598 | 0.010 |
| Deuteranopia (no green cones) | #627095 | 0.006 |
| Tritanopia (no blue cones) | #54797E | 0.053 |
| Achromatopsia (no color) | #727272 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #637296
#637296
oklch(55.4% 0.059 266.9)
- #82714A
#82714A
oklch(55.5% 0.059 86.9)
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 #637296, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.030
- Stormy Blue #507B9C ΔE 0.031
- Dull Blue #49759C ΔE 0.032
- Grey Blue #647D8E ΔE 0.038
- Cerulean #457B9D ΔE 0.039
- Battleship Gray #6C757D ΔE 0.044
- Battleship Grey #6B7C85 ΔE 0.047
- Grey Purple #826D8C ΔE 0.047
Use #637296 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.