#0058B9
Closest named color: Blue Blue (#2242C7). oklch(47.7% 0.169 257), rgb(0, 88, 185).
Aa
White text reads best on this color (6.78:1).
About this color
#0058B9 is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.169 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.056 away. White text reads best on it, at 6.78:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.169) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.09:1 |
| White text | 6.78:1 |
Values
| HEX | #0058B9 |
| RGB | rgb(0, 88, 185) |
| HSL | hsl(211, 100%, 36%) |
| OKLCH | oklch(47.7% 0.169 257) |
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 #0058B9 | 6.78:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #0058B9 | 3.09:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #0058B9 text on white | 6.78:1 | AA | Lc 82.6 | Fine for body text |
| #0058B9 text on black | 3.09:1 | AA large text | Lc -19.3 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF8
oklch(88.5% 0.046 256.5)
-
Step 300
300
#9FC3F6
oklch(80.9% 0.082 257.1)
-
Step 400
400
#6AA2F1
oklch(70.7% 0.131 257.1)
-
Step 500
500
#3F88EC
oklch(63.1% 0.167 257.1)
-
Step 600
600
#196FDB
oklch(55.6% 0.183 257.2)
-
Step 700
700 (this color)
#0058B9
oklch(47.7% 0.169 257)
-
Step 800
800
#0E4C99
oklch(42.7% 0.14 257)
-
Step 900
900
#15407A
oklch(37.6% 0.109 257.2)
-
Step 950
950
#0E2647
oklch(27% 0.068 257.1)
#0058B9 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) | #0B63BC | 0.031 |
| Deuteranopia (no green cones) | #0054B7 | 0.011 |
| Tritanopia (no blue cones) | #007080 | 0.127 |
| Achromatopsia (no color) | #5B5B5B | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0058B9
#0058B9
oklch(47.7% 0.169 257)
- #7C5400
#7C5400
oklch(47.7% 0.1 76.9)
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 #0058B9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.056
- Mid Blue #276AB3 ΔE 0.057
- Dusk Blue #26538D ΔE 0.071
- Denim Blue #3B5B92 ΔE 0.073
- Cobalt #1E488F ΔE 0.076
- Peacock Blue #016795 ΔE 0.077
- French Blue #436BAD ΔE 0.077
- Warm Blue #4B57DB ΔE 0.078
Use #0058B9 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.