#2D637B
Closest named color: YInMn Blue (#415A77). oklch(47.4% 0.069 229.7), rgb(45, 99, 123).
Aa
White text reads best on this color (6.59:1).
About this color
#2D637B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 47%, its chroma 0.069 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.031 away. White text reads best on it, at 6.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.18:1 |
| White text | 6.59:1 |
Values
| HEX | #2D637B |
| RGB | rgb(45, 99, 123) |
| HSL | hsl(198, 46%, 33%) |
| OKLCH | oklch(47.4% 0.069 229.7) |
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 #2D637B | 6.59:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #2D637B | 3.18:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #2D637B text on white | 6.59:1 | AA | Lc 82.5 | Fine for body text |
| #2D637B text on black | 3.18:1 | AA large text | Lc -19.4 | 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 700.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CDDCE3
oklch(88.5% 0.019 227.3)
-
Step 300
300
#ACC5D2
oklch(80.9% 0.033 230.4)
-
Step 400
400
#7EA7BC
oklch(70.6% 0.054 230.7)
-
Step 500
500
#5C92AB
oklch(63.2% 0.068 229.1)
-
Step 600
600
#417C96
oklch(55.7% 0.074 228.8)
-
Step 700
700 (this color)
#2D637B
oklch(47.4% 0.069 229.7)
-
Step 800
800
#2B5568
oklch(42.8% 0.056 229.4)
-
Step 900
900
#274655
oklch(37.7% 0.045 230.6)
-
Step 950
950
#172932
oklch(27% 0.029 231)
#2D637B 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) | #57617C | 0.049 |
| Deuteranopia (no green cones) | #4C597B | 0.043 |
| Tritanopia (no blue cones) | #006A6B | 0.045 |
| Achromatopsia (no color) | #5D5D5D | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D637B
#2D637B
oklch(47.4% 0.069 229.7)
- #7B5038
#7B5038
oklch(47.3% 0.068 49.7)
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 #2D637B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.031
- Denim #3B638C ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.039
- Petrol #005F6A ΔE 0.040
- Dark Aqua #05696B ΔE 0.043
- Peacock Blue #016795 ΔE 0.043
- Slate #516572 ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.052
Use #2D637B 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.