#819BD2
Closest named color: Greyblue (#77A1B5). oklch(69.1% 0.087 264.7), rgb(129, 155, 210).
Aa
Black text reads best on this color (7.55:1).
About this color
#819BD2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.087 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.053 away. Black text reads best on it, at 7.55:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.55:1 |
| White text | 2.78:1 |
Values
| HEX | #819BD2 |
| RGB | rgb(129, 155, 210) |
| HSL | hsl(221, 47%, 66%) |
| OKLCH | oklch(69.1% 0.087 264.7) |
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 #819BD2 | 2.78:1 | Fails | Lc -58.8 | Large or bold text, headings |
| Black text on #819BD2 | 7.55:1 | AAA | Lc 50.5 | Large or bold text, headings |
| #819BD2 text on white | 2.78:1 | Fails | Lc 53.6 | Large or bold text, headings |
| #819BD2 text on black | 7.55:1 | AAA | Lc -48.3 | Large or bold text, headings |
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 400.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#CFD9EE
oklch(88.4% 0.031 265.3)
-
Step 300
300
#AFC1E5
oklch(80.9% 0.055 264.2)
-
Step 400
400 (this color)
#819BD2
oklch(69.1% 0.087 264.7)
-
Step 500
500
#6888CD
oklch(63.2% 0.111 264.5)
-
Step 600
600
#5070BA
oklch(55.6% 0.121 265.1)
-
Step 700
700
#415EA0
oklch(49.2% 0.111 264.7)
-
Step 800
800
#354D82
oklch(42.8% 0.093 264.4)
-
Step 900
900
#2E4068
oklch(37.6% 0.073 264.8)
-
Step 950
950
#1B263D
oklch(27% 0.046 264.1)
#819BD2 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) | #889FD4 | 0.015 |
| Deuteranopia (no green cones) | #8098D1 | 0.008 |
| Tritanopia (no blue cones) | #67A6AE | 0.077 |
| Achromatopsia (no color) | #9B9B9B | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819BD2
#819BD2
oklch(69.1% 0.087 264.7)
- #B5975B
#B5975B
oklch(69% 0.086 83.7)
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 #819BD2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.053
- Cool Gray #8D99AE ΔE 0.054
- Cornflower Blue #6495ED ΔE 0.057
- Bluey Grey #89A0B0 ΔE 0.057
- Perrywinkle #8F8CE7 ΔE 0.059
- Bluegrey #85A3B2 ΔE 0.059
- Faded Blue #658CBB ΔE 0.063
- Periwinkle Blue #8F99FB ΔE 0.066
Use #819BD2 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.