#034688
Closest named color: Cobalt (#1E488F). oklch(39.8% 0.125 254.3), rgb(3, 70, 136).
Aa
White text reads best on this color (9.39:1).
About this color
#034688 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.125 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.021 away. White text reads best on it, at 9.39:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.23:1 |
| White text | 9.39:1 |
Values
| HEX | #034688 |
| RGB | rgb(3, 70, 136) |
| HSL | hsl(210, 96%, 27%) |
| OKLCH | oklch(39.8% 0.125 254.3) |
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 #034688 | 9.39:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #034688 | 2.23:1 | Fails | Lc 12.9 | Not readable |
| #034688 text on white | 9.39:1 | AAA | Lc 91.1 | Preferred for body text |
| #034688 text on black | 2.23:1 | Fails | Lc -11.3 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFC
oklch(93.5% 0.027 255.1)
-
Step 200
200
#C2DCFC
oklch(88.6% 0.052 253.7)
-
Step 300
300
#97C4FD
oklch(80.9% 0.094 254.6)
-
Step 400
400
#59A3FC
oklch(70.8% 0.151 254.3)
-
Step 500
500
#1A88F9
oklch(63% 0.192 254.4)
-
Step 600
600
#0071D8
oklch(55.5% 0.179 254.5)
-
Step 700
700
#005FB7
oklch(49.1% 0.158 254.4)
-
Step 800
800
#004E97
oklch(42.8% 0.136 254.1)
-
Step 900
900 (this color)
#034688
oklch(39.8% 0.125 254.3)
-
Step 950
950
#04264C
oklch(27% 0.08 254.4)
#034688 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) | #204C8A | 0.026 |
| Deuteranopia (no green cones) | #004187 | 0.015 |
| Tritanopia (no blue cones) | #005660 | 0.093 |
| Achromatopsia (no color) | #464646 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #034688
#034688
oklch(39.8% 0.125 254.3)
- #613F00
#613F00
oklch(39.7% 0.084 74.6)
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 #034688, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.021
- Twilight Blue #0A437A ΔE 0.024
- Light Navy #155084 ΔE 0.034
- Deep Sea Blue #015482 ΔE 0.045
- Dusk Blue #26538D ΔE 0.047
- Marine Blue #01386A ΔE 0.063
- Sapphire #2138AB ΔE 0.069
- Blueberry #464196 ΔE 0.070
Use #034688 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.