#034FA9
Closest named color: Cobalt (#1E488F). oklch(44.4% 0.159 257.6), rgb(3, 79, 169).
Aa
White text reads best on this color (7.79:1).
About this color
#034FA9 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.159 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.045 away. White text reads best on it, at 7.79:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.69:1 |
| White text | 7.79:1 |
Values
| HEX | #034FA9 |
| RGB | rgb(3, 79, 169) |
| HSL | hsl(213, 97%, 34%) |
| OKLCH | oklch(44.4% 0.159 257.6) |
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 #034FA9 | 7.79:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #034FA9 | 2.69:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #034FA9 text on white | 7.79:1 | AAA | Lc 86.3 | Fine for body text |
| #034FA9 text on black | 2.69:1 | Fails | Lc -15.8 | 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 800.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C4DBFC
oklch(88.5% 0.052 257.4)
-
Step 300
300
#9BC3FD
oklch(81% 0.093 257.6)
-
Step 400
400
#62A1FC
oklch(70.7% 0.149 257.6)
-
Step 500
500
#3286F9
oklch(63.1% 0.19 257.5)
-
Step 600
600
#006DE6
oklch(55.7% 0.202 257.5)
-
Step 700
700
#005BC3
oklch(49.1% 0.179 257.6)
-
Step 800
800 (this color)
#034FA9
oklch(44.4% 0.159 257.6)
-
Step 900
900
#0C3F81
oklch(37.7% 0.123 257.4)
-
Step 950
950
#0A254C
oklch(26.9% 0.079 258.2)
#034FA9 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) | #0459AC | 0.027 |
| Deuteranopia (no green cones) | #004CA7 | 0.009 |
| Tritanopia (no blue cones) | #006574 | 0.119 |
| Achromatopsia (no color) | #525252 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #034FA9
#034FA9
oklch(44.4% 0.159 257.6)
- #704C00
#704C00
oklch(44.5% 0.093 77.5)
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 #034FA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.045
- Dusk Blue #26538D ΔE 0.051
- Sapphire #2138AB ΔE 0.054
- Blue Blue #2242C7 ΔE 0.058
- Light Navy #155084 ΔE 0.061
- Blueberry #464196 ΔE 0.068
- Deep Sea Blue #015482 ΔE 0.068
- Denim Blue #3B5B92 ΔE 0.069
Use #034FA9 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.