#034591
Closest named color: Cobalt (#1E488F). oklch(40.2% 0.139 256.9), rgb(3, 69, 145).
Aa
White text reads best on this color (9.27:1).
About this color
#034591 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.139 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.019 away. White text reads best on it, at 9.27:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.26:1 |
| White text | 9.27:1 |
Values
| HEX | #034591 |
| RGB | rgb(3, 69, 145) |
| HSL | hsl(212, 96%, 29%) |
| OKLCH | oklch(40.2% 0.139 256.9) |
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 #034591 | 9.27:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #034591 | 2.26:1 | Fails | Lc 13.3 | Not readable |
| #034591 text on white | 9.27:1 | AAA | Lc 90.7 | Preferred for body text |
| #034591 text on black | 2.26:1 | Fails | Lc -11.6 | 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 800.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C7DBF7
oklch(88.5% 0.044 256.8)
-
Step 300
300
#9FC3F5
oklch(80.9% 0.081 256.7)
-
Step 400
400
#6AA2F0
oklch(70.7% 0.129 256.9)
-
Step 500
500
#3F88EB
oklch(63% 0.166 256.9)
-
Step 600
600
#1970DA
oklch(55.7% 0.18 256.7)
-
Step 700
700
#085DBD
oklch(49.2% 0.168 256.7)
-
Step 800
800 (this color)
#034591
oklch(40.2% 0.139 256.9)
-
Step 900
900
#15407A
oklch(37.6% 0.109 257.2)
-
Step 950
950
#0E2647
oklch(27% 0.068 257.1)
#034591 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) | #0F4D94 | 0.024 |
| Deuteranopia (no green cones) | #004290 | 0.009 |
| Tritanopia (no blue cones) | #005864 | 0.105 |
| Achromatopsia (no color) | #474747 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #034591
#034591
oklch(40.2% 0.139 256.9)
- #614100
#614100
oklch(40.2% 0.084 77.1)
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 #034591, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.019
- Twilight Blue #0A437A ΔE 0.038
- Light Navy #155084 ΔE 0.043
- Dusk Blue #26538D ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.054
- Sapphire #2138AB ΔE 0.055
- Blueberry #464196 ΔE 0.065
- Dark Slate Blue #483D8B ΔE 0.069
Use #034591 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.