#34637A
Closest named color: YInMn Blue (#415A77). oklch(47.6% 0.063 231.4), rgb(52, 99, 122).
Aa
White text reads best on this color (6.53:1).
About this color
#34637A is a medium-dark, muted blue. In OKLCH its lightness is 48%, its chroma 0.063 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.028 away. White text reads best on it, at 6.53:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.21:1 |
| White text | 6.53:1 |
Values
| HEX | #34637A |
| RGB | rgb(52, 99, 122) |
| HSL | hsl(200, 40%, 34%) |
| OKLCH | oklch(47.6% 0.063 231.4) |
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 #34637A | 6.53:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #34637A | 3.21:1 | AA large text | Lc 21.8 | Dividers and decoration only |
| #34637A text on white | 6.53:1 | AA | Lc 82.3 | Fine for body text |
| #34637A text on black | 3.21:1 | AA large text | Lc -19.6 | 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 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
#CEDBE2
oklch(88.4% 0.017 230.9)
-
Step 300
300
#AEC5D1
oklch(81% 0.03 230.4)
-
Step 400
400
#82A7BA
oklch(70.8% 0.049 230.6)
-
Step 500
500
#6291A9
oklch(63.2% 0.062 231.2)
-
Step 600
600
#477B94
oklch(55.7% 0.068 230.5)
-
Step 700
700 (this color)
#34637A
oklch(47.6% 0.063 231.4)
-
Step 800
800
#2F5467
oklch(42.6% 0.053 232.2)
-
Step 900
900
#2A4654
oklch(37.8% 0.041 231)
-
Step 950
950
#192931
oklch(27% 0.026 230.6)
#34637A 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) | #58627B | 0.044 |
| Deuteranopia (no green cones) | #4E5A7A | 0.039 |
| Tritanopia (no blue cones) | #00696A | 0.047 |
| Achromatopsia (no color) | #5D5D5D | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #34637A
#34637A
oklch(47.6% 0.063 231.4)
- #79523B
#79523B
oklch(47.6% 0.063 51.2)
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 #34637A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.028
- Denim #3B638C ΔE 0.032
- Slate #516572 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.041
- Petrol #005F6A ΔE 0.044
- Dark Aqua #05696B ΔE 0.045
- Peacock Blue #016795 ΔE 0.047
- Dusty Grape #545775 ΔE 0.049
Use #34637A 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.