#34517E
Closest named color: Dusk Blue (#26538D). oklch(43.4% 0.083 258.9), rgb(52, 81, 126).
Aa
White text reads best on this color (8.00:1).
About this color
#34517E is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.083 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.027 away. White text reads best on it, at 8.00:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.62:1 |
| White text | 8.00:1 |
Values
| HEX | #34517E |
| RGB | rgb(52, 81, 126) |
| HSL | hsl(216, 42%, 35%) |
| OKLCH | oklch(43.4% 0.083 258.9) |
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 #34517E | 8.00:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #34517E | 2.62:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #34517E text on white | 8.00:1 | AAA | Lc 87.6 | Fine for body text |
| #34517E text on black | 2.62:1 | Fails | Lc -14.5 | Not readable |
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 800.
-
Step 50
50
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CFDAEB
oklch(88.5% 0.026 259)
-
Step 300
300
#AEC2E0
oklch(80.9% 0.048 258.4)
-
Step 400
400
#83A2D1
oklch(70.7% 0.077 258.5)
-
Step 500
500
#648AC5
oklch(63% 0.099 258.9)
-
Step 600
600
#4B73B2
oklch(55.5% 0.108 259.2)
-
Step 700
700
#3C6199
oklch(49.2% 0.1 258.4)
-
Step 800
800 (this color)
#34517E
oklch(43.4% 0.083 258.9)
-
Step 900
900
#2C4264
oklch(37.7% 0.065 258.8)
-
Step 950
950
#1A273A
oklch(27% 0.04 257.8)
#34517E 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) | #3F5480 | 0.018 |
| Deuteranopia (no green cones) | #354D7D | 0.012 |
| Tritanopia (no blue cones) | #005B61 | 0.074 |
| Achromatopsia (no color) | #505050 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #34517E
#34517E
oklch(43.4% 0.083 258.9)
- #694B0F
#694B0F
oklch(43.5% 0.083 79.6)
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 #34517E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.027
- Light Navy Blue #2E5A88 ΔE 0.028
- Light Navy #155084 ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.033
- Dusk #4E5481 ΔE 0.038
- YInMn Blue #415A77 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.042
- Twilight #4E518B ΔE 0.042
Use #34517E 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.