#34417F
Closest named color: Cobalt (#1E488F). oklch(39.8% 0.105 271.9), rgb(52, 65, 127).
Aa
White text reads best on this color (9.50:1).
About this color
#34417F is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.105 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.036 away. White text reads best on it, at 9.50:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.20:1 |
| White text | 9.50:1 |
Values
| HEX | #34417F |
| RGB | rgb(52, 65, 127) |
| HSL | hsl(230, 42%, 35%) |
| OKLCH | oklch(39.8% 0.105 271.9) |
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 #34417F | 9.50:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #34417F | 2.20:1 | Fails | Lc 12.1 | Not readable |
| #34417F text on white | 9.50:1 | AAA | Lc 91.8 | Preferred for body text |
| #34417F text on black | 2.20:1 | Fails | Lc -10.6 | 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 900.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CFD8F7
oklch(88.5% 0.044 272.7)
-
Step 300
300
#AEBEF4
oklch(80.8% 0.079 271.7)
-
Step 400
400
#859BEF
oklch(70.7% 0.126 271.7)
-
Step 500
500
#687FEA
oklch(63% 0.162 271.9)
-
Step 600
600
#5266D8
oklch(55.6% 0.175 272)
-
Step 700
700
#4354BB
oklch(49.1% 0.162 272)
-
Step 800
800
#374598
oklch(42.7% 0.136 272.2)
-
Step 900
900 (this color)
#34417F
oklch(39.8% 0.105 271.9)
-
Step 950
950
#1B2347
oklch(27% 0.068 271.8)
#34417F 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) | #244981 | 0.027 |
| Deuteranopia (no green cones) | #19427E | 0.029 |
| Tritanopia (no blue cones) | #044F5A | 0.093 |
| Achromatopsia (no color) | #464646 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #34417F
#34417F
oklch(39.8% 0.105 271.9)
- #574500
#574500
oklch(39.8% 0.081 91.8)
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 #34417F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.036
- Dark Slate Blue #483D8B ΔE 0.038
- Twilight Blue #0A437A ΔE 0.040
- Light Navy #155084 ΔE 0.047
- Blueberry #464196 ΔE 0.047
- Dusk Blue #26538D ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.061
- Twilight #4E518B ΔE 0.064
Use #34417F 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.