#034EBB
Closest named color: Blue Blue (#2242C7). oklch(45.7% 0.184 260), rgb(3, 78, 187).
Aa
White text reads best on this color (7.47:1).
About this color
#034EBB is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.184 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.034 away. White text reads best on it, at 7.47:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.184) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.81:1 |
| White text | 7.47:1 |
Values
| HEX | #034EBB |
| RGB | rgb(3, 78, 187) |
| HSL | hsl(216, 97%, 37%) |
| OKLCH | oklch(45.7% 0.184 260) |
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 #034EBB | 7.47:1 | AAA | Lc -90.0 | Fine for body text |
| Black text on #034EBB | 2.81:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #034EBB text on white | 7.47:1 | AAA | Lc 85.1 | Fine for body text |
| #034EBB text on black | 2.81:1 | Fails | Lc -16.9 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFF
oklch(93.6% 0.031 258.9)
-
Step 200
200
#C4DAFF
oklch(88.4% 0.057 260.8)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#669FFF
oklch(70.7% 0.154 260.3)
-
Step 500
500
#3883FF
oklch(63% 0.199 260)
-
Step 600
600
#0067F4
oklch(55.6% 0.226 260)
-
Step 700
700
#0056CF
oklch(49.1% 0.2 260)
-
Step 800
800 (this color)
#034EBB
oklch(45.7% 0.184 260)
-
Step 900
900
#083B8C
oklch(37.6% 0.144 260.2)
-
Step 950
950
#082452
oklch(27.1% 0.091 260)
#034EBB 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) | #005DBF | 0.039 |
| Deuteranopia (no green cones) | #004DB9 | 0.004 |
| Tritanopia (no blue cones) | #006A7D | 0.139 |
| Achromatopsia (no color) | #555555 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #034EBB
#034EBB
oklch(45.7% 0.184 260)
- #735000
#735000
oklch(45.7% 0.095 79.5)
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 #034EBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.034
- Sapphire #2138AB ΔE 0.056
- Majorelle Blue #3F37C9 ΔE 0.063
- Cobalt #1E488F ΔE 0.072
- Dusk Blue #26538D ΔE 0.078
- Blue With A Hint Of Purple #533CC6 ΔE 0.080
- Blueberry #464196 ΔE 0.082
- Mid Blue #276AB3 ΔE 0.083
Use #034EBB 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.