#004FBC
Closest named color: Blue Blue (#2242C7). oklch(46% 0.184 259.7), rgb(0, 79, 188).
Aa
White text reads best on this color (7.38:1).
About this color
#004FBC 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 0.035 away. White text reads best on it, at 7.38:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.184) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.84:1 |
| White text | 7.38:1 |
Values
| HEX | #004FBC |
| RGB | rgb(0, 79, 188) |
| HSL | hsl(215, 100%, 37%) |
| OKLCH | oklch(46% 0.184 259.7) |
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 #004FBC | 7.38:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #004FBC | 2.84:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #004FBC text on white | 7.38:1 | AAA | Lc 84.7 | Fine for body text |
| #004FBC text on black | 2.84:1 | Fails | Lc -17.3 | 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 700.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DAFB
oklch(88.4% 0.051 260.4)
-
Step 300
300
#9FC2FB
oklch(80.9% 0.09 260)
-
Step 400
400
#6AA0F9
oklch(70.7% 0.143 259.9)
-
Step 500
500
#4085F5
oklch(63% 0.182 259.7)
-
Step 600
600
#1D6CE4
oklch(55.7% 0.197 259.5)
-
Step 700
700 (this color)
#004FBC
oklch(46% 0.184 259.7)
-
Step 800
800
#1149A0
oklch(42.6% 0.152 259.7)
-
Step 900
900
#163E7F
oklch(37.6% 0.119 259.8)
-
Step 950
950
#0E254B
oklch(27% 0.076 259.9)
#004FBC 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) | #005EC0 | 0.039 |
| Deuteranopia (no green cones) | #004EBA | 0.004 |
| Tritanopia (no blue cones) | #006B7E | 0.139 |
| Achromatopsia (no color) | #565656 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004FBC
#004FBC
oklch(46% 0.184 259.7)
- #745100
#745100
oklch(46.1% 0.096 79.8)
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 #004FBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.035
- Sapphire #2138AB ΔE 0.059
- Majorelle Blue #3F37C9 ΔE 0.065
- Cobalt #1E488F ΔE 0.074
- Dusk Blue #26538D ΔE 0.079
- Mid Blue #276AB3 ΔE 0.081
- Blue With A Hint Of Purple #533CC6 ΔE 0.081
- Warm Blue #4B57DB ΔE 0.082
Use #004FBC 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.