#1965D0
Closest named color: Royal Blue (#4169E1). oklch(52.6% 0.18 258.6), rgb(25, 101, 208).
Aa
White text reads best on this color (5.50:1).
About this color
#1965D0 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.180 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.043 away. White text reads best on it, at 5.50:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.180) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 3.81:1 |
| White text | 5.50:1 |
Values
| HEX | #1965D0 |
| RGB | rgb(25, 101, 208) |
| HSL | hsl(215, 79%, 46%) |
| OKLCH | oklch(52.6% 0.18 258.6) |
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 #1965D0 | 5.50:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #1965D0 | 3.81:1 | AA large text | Lc 27.2 | Dividers and decoration only |
| #1965D0 text on white | 5.50:1 | AA | Lc 76.8 | Fine for body text |
| #1965D0 text on black | 3.81:1 | AA large text | Lc -24.9 | 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 600.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C7DBF8
oklch(88.6% 0.046 257.6)
-
Step 300
300
#A1C2F5
oklch(80.8% 0.081 259)
-
Step 400
400
#6DA1F1
oklch(70.7% 0.13 258.7)
-
Step 500
500
#4587EC
oklch(63.1% 0.166 258.8)
-
Step 600
600 (this color)
#1965D0
oklch(52.6% 0.18 258.6)
-
Step 700
700
#165CBD
oklch(49.2% 0.167 258.4)
-
Step 800
800
#164B99
oklch(42.6% 0.139 258.8)
-
Step 900
900
#19407A
oklch(37.8% 0.108 258.5)
-
Step 950
950
#102647
oklch(27% 0.068 258.4)
#1965D0 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) | #1871D4 | 0.032 |
| Deuteranopia (no green cones) | #0061CE | 0.015 |
| Tritanopia (no blue cones) | #007F91 | 0.136 |
| Achromatopsia (no color) | #696969 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1965D0
#1965D0
oklch(52.6% 0.18 258.6)
- #8C6100
#8C6100
oklch(52.5% 0.109 78.4)
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 #1965D0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.043
- Azul #1D5DEC ΔE 0.048
- Cerulean Blue #056EEE ΔE 0.049
- Mid Blue #276AB3 ΔE 0.050
- Warm Blue #4B57DB ΔE 0.053
- Neon Blue #4361EE ΔE 0.057
- Windows Blue #3778BF ΔE 0.067
- French Blue #436BAD ΔE 0.067
Use #1965D0 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.