#015CD9
Closest named color: Azul (#1D5DEC). oklch(51.2% 0.206 259.8), rgb(1, 92, 217).
Aa
White text reads best on this color (5.94:1).
About this color
#015CD9 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.206 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.032 away. White text reads best on it, at 5.94:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.206) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.53:1 |
| White text | 5.94:1 |
Values
| HEX | #015CD9 |
| RGB | rgb(1, 92, 217) |
| HSL | hsl(215, 99%, 43%) |
| OKLCH | oklch(51.2% 0.206 259.8) |
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 #015CD9 | 5.94:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #015CD9 | 3.53:1 | AA large text | Lc 25.3 | Dividers and decoration only |
| #015CD9 text on white | 5.94:1 | AA | Lc 78.8 | Fine for body text |
| #015CD9 text on black | 3.53:1 | AA large text | Lc -23.0 | 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
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C4DBFE
oklch(88.6% 0.054 258.7)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#659FFF
oklch(70.6% 0.154 260)
-
Step 500
500
#3783FF
oklch(63% 0.199 259.9)
-
Step 600
600
#0568F1
oklch(55.6% 0.221 259.8)
-
Step 700
700 (this color)
#015CD9
oklch(51.2% 0.206 259.8)
-
Step 800
800
#0247AA
oklch(42.8% 0.17 259.8)
-
Step 900
900
#0E3D86
oklch(37.7% 0.132 259.6)
-
Step 950
950
#0A244F
oklch(26.9% 0.085 260)
#015CD9 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) | #006DDD | 0.043 |
| Deuteranopia (no green cones) | #005BD7 | 0.004 |
| Tritanopia (no blue cones) | #007C91 | 0.156 |
| Achromatopsia (no color) | #646464 | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #015CD9
#015CD9
oklch(51.2% 0.206 259.8)
- #865E00
#865E00
oklch(51.1% 0.106 79.7)
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 #015CD9, closest first.
No curated palette has a color within ΔE 0.04 of #015CD9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.032
- Warm Blue #4B57DB ΔE 0.051
- Cerulean Blue #056EEE ΔE 0.054
- Royal Blue #4169E1 ΔE 0.056
- Neon Blue #4361EE ΔE 0.056
- Bright Blue #0165FC ΔE 0.058
- Electric Blue #0652FF ΔE 0.061
- Blue Blue #2242C7 ΔE 0.064
Use #015CD9 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.