#055BD5
Closest named color: Azul (#1D5DEC). oklch(50.7% 0.201 259.9), rgb(5, 91, 213).
Aa
White text reads best on this color (6.06:1).
About this color
#055BD5 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.201 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.038 away. White text reads best on it, at 6.06:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.201) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.46:1 |
| White text | 6.06:1 |
Values
| HEX | #055BD5 |
| RGB | rgb(5, 91, 213) |
| HSL | hsl(215, 95%, 43%) |
| OKLCH | oklch(50.7% 0.201 259.9) |
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 #055BD5 | 6.06:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #055BD5 | 3.46:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #055BD5 text on white | 6.06:1 | AA | Lc 79.4 | Fine for body text |
| #055BD5 text on black | 3.46:1 | AA large text | Lc -22.4 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DAFE
oklch(88.4% 0.055 261.2)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#659FFF
oklch(70.6% 0.154 260)
-
Step 500
500
#3883FF
oklch(63% 0.199 260)
-
Step 600
600
#0D69EF
oklch(55.7% 0.217 259.8)
-
Step 700
700 (this color)
#055BD5
oklch(50.7% 0.201 259.9)
-
Step 800
800
#0647A8
oklch(42.7% 0.167 260)
-
Step 900
900
#103D85
oklch(37.7% 0.13 259.9)
-
Step 950
950
#0B254E
oklch(27.1% 0.082 259.4)
#055BD5 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) | #006BD9 | 0.040 |
| Deuteranopia (no green cones) | #005AD3 | 0.004 |
| Tritanopia (no blue cones) | #007A8F | 0.152 |
| Achromatopsia (no color) | #626262 | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #055BD5
#055BD5
oklch(50.7% 0.201 259.9)
- #845D00
#845D00
oklch(50.6% 0.105 80.1)
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 #055BD5, closest first.
No curated palette has a color within ΔE 0.04 of #055BD5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.038
- Warm Blue #4B57DB ΔE 0.051
- Royal Blue #4169E1 ΔE 0.059
- Blue Blue #2242C7 ΔE 0.060
- Cerulean Blue #056EEE ΔE 0.060
- Neon Blue #4361EE ΔE 0.061
- Bright Blue #0165FC ΔE 0.064
- Electric Blue #0652FF ΔE 0.066
Use #055BD5 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.