#004BB0
Closest named color: Blue Blue (#2242C7). oklch(44.1% 0.174 259.3), rgb(0, 75, 176).
Aa
White text reads best on this color (7.97:1).
About this color
#004BB0 is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.174 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.044 away. White text reads best on it, at 7.97:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.63:1 |
| White text | 7.97:1 |
Values
| HEX | #004BB0 |
| RGB | rgb(0, 75, 176) |
| HSL | hsl(214, 100%, 35%) |
| OKLCH | oklch(44.1% 0.174 259.3) |
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 #004BB0 | 7.97:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #004BB0 | 2.63:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #004BB0 text on white | 7.97:1 | AAA | Lc 86.8 | Fine for body text |
| #004BB0 text on black | 2.63:1 | Fails | Lc -15.3 | 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
#DEEBFE
oklch(93.6% 0.029 257.8)
-
Step 200
200
#C3DBFF
oklch(88.5% 0.056 258.4)
-
Step 300
300
#9BC2FF
oklch(80.8% 0.097 259.2)
-
Step 400
400
#64A0FF
oklch(70.8% 0.153 259.2)
-
Step 500
500
#3584FF
oklch(63.2% 0.199 259.3)
-
Step 600
600
#0069F0
oklch(55.7% 0.219 259.3)
-
Step 700
700
#0058CB
oklch(49.1% 0.193 259.2)
-
Step 800
800 (this color)
#004BB0
oklch(44.1% 0.174 259.3)
-
Step 900
900
#0A3D88
oklch(37.8% 0.136 259.3)
-
Step 950
950
#09244F
oklch(26.9% 0.086 259.6)
#004BB0 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) | #0058B3 | 0.034 |
| Deuteranopia (no green cones) | #004AAE | 0.004 |
| Tritanopia (no blue cones) | #006576 | 0.131 |
| Achromatopsia (no color) | #515151 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004BB0
#004BB0
oklch(44.1% 0.174 259.3)
- #6D4C00
#6D4C00
oklch(44.1% 0.091 79.9)
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 #004BB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.044
- Sapphire #2138AB ΔE 0.044
- Cobalt #1E488F ΔE 0.054
- Dusk Blue #26538D ΔE 0.066
- Majorelle Blue #3F37C9 ΔE 0.070
- Blueberry #464196 ΔE 0.072
- Light Navy #155084 ΔE 0.075
- Deep Sea Blue #015482 ΔE 0.082
Use #004BB0 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.