#005CB9
Closest named color: Mid Blue (#276AB3). oklch(48.5% 0.164 255.8), rgb(0, 92, 185).
Aa
White text reads best on this color (6.49:1).
About this color
#005CB9 is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.164 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.047 away. White text reads best on it, at 6.49:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.23:1 |
| White text | 6.49:1 |
Values
| HEX | #005CB9 |
| RGB | rgb(0, 92, 185) |
| HSL | hsl(210, 100%, 36%) |
| OKLCH | oklch(48.5% 0.164 255.8) |
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 #005CB9 | 6.49:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #005CB9 | 3.23:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #005CB9 text on white | 6.49:1 | AA | Lc 81.4 | Fine for body text |
| #005CB9 text on black | 3.23:1 | AA large text | Lc -20.4 | 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
#C6DBF7
oklch(88.5% 0.045 255.6)
-
Step 300
300
#9FC3F4
oklch(80.8% 0.08 256.2)
-
Step 400
400
#69A3EF
oklch(70.8% 0.128 255.7)
-
Step 500
500
#3D89E9
oklch(63% 0.163 255.8)
-
Step 600
600
#1571D7
oklch(55.6% 0.176 255.6)
-
Step 700
700 (this color)
#005CB9
oklch(48.5% 0.164 255.8)
-
Step 800
800
#0B4D97
oklch(42.7% 0.136 255.8)
-
Step 900
900
#144178
oklch(37.7% 0.106 255.7)
-
Step 950
950
#0D2646
oklch(26.8% 0.067 255.9)
#005CB9 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) | #1E66BC | 0.032 |
| Deuteranopia (no green cones) | #0057B7 | 0.014 |
| Tritanopia (no blue cones) | #007382 | 0.122 |
| Achromatopsia (no color) | #5E5E5E | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #005CB9
#005CB9
oklch(48.5% 0.164 255.8)
- #805600
#805600
oklch(48.7% 0.102 76.1)
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 #005CB9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.047
- Blue Blue #2242C7 ΔE 0.065
- French Blue #436BAD ΔE 0.068
- Denim Blue #3B5B92 ΔE 0.069
- Peacock Blue #016795 ΔE 0.070
- Dusk Blue #26538D ΔE 0.072
- Dusky Blue #475F94 ΔE 0.077
- Warm Blue #4B57DB ΔE 0.077
Use #005CB9 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.