#015FD0
Closest named color: Azul (#1D5DEC). oklch(51% 0.191 258.3), rgb(1, 95, 208).
Aa
White text reads best on this color (5.91:1).
About this color
#015FD0 is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.191 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.045 away. White text reads best on it, at 5.91:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.54:1 |
| White text | 5.91:1 |
Values
| HEX | #015FD0 |
| RGB | rgb(1, 95, 208) |
| HSL | hsl(213, 99%, 41%) |
| OKLCH | oklch(51% 0.191 258.3) |
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 #015FD0 | 5.91:1 | AA | Lc -84.0 | Fine for body text |
| Black text on #015FD0 | 3.54:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #015FD0 text on white | 5.91:1 | AA | Lc 78.7 | Fine for body text |
| #015FD0 text on black | 3.54:1 | AA large text | Lc -23.1 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFC
oklch(88.6% 0.051 258.4)
-
Step 300
300
#9CC3FC
oklch(81% 0.091 257.8)
-
Step 400
400
#64A1FB
oklch(70.8% 0.147 258)
-
Step 500
500
#3686F9
oklch(63.2% 0.189 258.1)
-
Step 600
600
#066CE8
oklch(55.7% 0.205 258.2)
-
Step 700
700 (this color)
#015FD0
oklch(51% 0.191 258.3)
-
Step 800
800
#0249A3
oklch(42.6% 0.159 258.4)
-
Step 900
900
#0F3F81
oklch(37.8% 0.122 258)
-
Step 950
950
#0B254C
oklch(27% 0.079 258.6)
#015FD0 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) | #006DD4 | 0.036 |
| Deuteranopia (no green cones) | #005CCE | 0.008 |
| Tritanopia (no blue cones) | #007B8E | 0.143 |
| Achromatopsia (no color) | #646464 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #015FD0
#015FD0
oklch(51% 0.191 258.3)
- #875D00
#875D00
oklch(51% 0.106 78)
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 #015FD0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.045
- Warm Blue #4B57DB ΔE 0.055
- Royal Blue #4169E1 ΔE 0.056
- Cerulean Blue #056EEE ΔE 0.059
- Mid Blue #276AB3 ΔE 0.060
- Neon Blue #4361EE ΔE 0.064
- Blue Blue #2242C7 ΔE 0.067
- Bright Blue #0165FC ΔE 0.069
Use #015FD0 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.