#365BD5
Closest named color: Warm Blue (#4B57DB). oklch(51.8% 0.192 266.7), rgb(54, 91, 213).
Aa
White text reads best on this color (5.81:1).
About this color
#365BD5 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.192 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.026 away. White text reads best on it, at 5.81:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.192) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.61:1 |
| White text | 5.81:1 |
Values
| HEX | #365BD5 |
| RGB | rgb(54, 91, 213) |
| HSL | hsl(226, 65%, 52%) |
| OKLCH | oklch(51.8% 0.192 266.7) |
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 #365BD5 | 5.81:1 | AA | Lc -83.8 | Fine for body text |
| Black text on #365BD5 | 3.61:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #365BD5 text on white | 5.81:1 | AA | Lc 78.5 | Fine for body text |
| #365BD5 text on black | 3.61:1 | AA large text | Lc -23.3 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFD
oklch(93.7% 0.027 267.5)
-
Step 200
200
#CAD9FC
oklch(88.5% 0.051 267)
-
Step 300
300
#A5BFFE
oklch(80.8% 0.094 267)
-
Step 400
400
#769CFD
oklch(70.8% 0.148 266.5)
-
Step 500
500
#557FFB
oklch(63.1% 0.19 266.8)
-
Step 600
600
#3C64EA
oklch(55.5% 0.207 266.7)
-
Step 700
700 (this color)
#365BD5
oklch(51.8% 0.192 266.7)
-
Step 800
800
#2744A5
oklch(42.7% 0.16 266.7)
-
Step 900
900
#233B82
oklch(37.7% 0.123 266.4)
-
Step 950
950
#15234C
oklch(27% 0.078 266.9)
#365BD5 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) | #006DD9 | 0.046 |
| Deuteranopia (no green cones) | #005ED3 | 0.028 |
| Tritanopia (no blue cones) | #00798F | 0.151 |
| Achromatopsia (no color) | #656565 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #365BD5
#365BD5
oklch(51.8% 0.192 266.7)
- #836300
#836300
oklch(51.8% 0.106 86.4)
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 #365BD5, closest first.
No curated palette has a color within ΔE 0.04 of #365BD5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.026
- Azul #1D5DEC ΔE 0.038
- Royal Blue #4169E1 ΔE 0.042
- Neon Blue #4361EE ΔE 0.044
- Cerulean Blue #056EEE ΔE 0.058
- Iris #6258C4 ΔE 0.060
- Dark Periwinkle #665FD1 ΔE 0.063
- Bright Blue #0165FC ΔE 0.065
Use #365BD5 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.