#045FDF
Closest named color: Azul (#1D5DEC). oklch(52.3% 0.209 259.9), rgb(4, 95, 223).
Aa
White text reads best on this color (5.66:1).
About this color
#045FDF is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.209 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.022 away. White text reads best on it, at 5.66:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.209) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.70:1 |
| White text | 5.66:1 |
Values
| HEX | #045FDF |
| RGB | rgb(4, 95, 223) |
| HSL | hsl(215, 96%, 45%) |
| OKLCH | oklch(52.3% 0.209 259.9) |
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 #045FDF | 5.66:1 | AA | Lc -82.7 | Fine for body text |
| Black text on #045FDF | 3.70:1 | AA large text | Lc 26.7 | Dividers and decoration only |
| #045FDF text on white | 5.66:1 | AA | Lc 77.4 | Fine for body text |
| #045FDF text on black | 3.70:1 | AA large text | Lc -24.4 | 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
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C4DBFF
oklch(88.6% 0.056 259.3)
-
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
#0167F3
oklch(55.5% 0.225 259.9)
-
Step 700
700 (this color)
#045FDF
oklch(52.3% 0.209 259.9)
-
Step 800
800
#0046AB
oklch(42.6% 0.173 259.9)
-
Step 900
900
#0D3D87
oklch(37.8% 0.134 259.6)
-
Step 950
950
#0A244F
oklch(26.9% 0.085 260)
#045FDF 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) | #0070E3 | 0.042 |
| Deuteranopia (no green cones) | #005EDD | 0.004 |
| Tritanopia (no blue cones) | #008096 | 0.158 |
| Achromatopsia (no color) | #676767 | 0.209 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045FDF
#045FDF
oklch(52.3% 0.209 259.9)
- #8A6100
#8A6100
oklch(52.2% 0.108 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 #045FDF, closest first.
No curated palette has a color within ΔE 0.04 of #045FDF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.022
- Cerulean Blue #056EEE ΔE 0.043
- Bright Blue #0165FC ΔE 0.046
- Neon Blue #4361EE ΔE 0.047
- Royal Blue #4169E1 ΔE 0.048
- Warm Blue #4B57DB ΔE 0.049
- Electric Blue #0652FF ΔE 0.055
- Blue Blue #2242C7 ΔE 0.075
Use #045FDF 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.