#819BCB
Closest named color: Cool Gray (#8D99AE). oklch(68.8% 0.077 262.4), rgb(129, 155, 203).
Aa
Black text reads best on this color (7.48:1).
About this color
#819BCB is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.077 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.044 away. Black text reads best on it, at 7.48:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.48:1 |
| White text | 2.80:1 |
Values
| HEX | #819BCB |
| RGB | rgb(129, 155, 203) |
| HSL | hsl(219, 42%, 65%) |
| OKLCH | oklch(68.8% 0.077 262.4) |
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 #819BCB | 2.80:1 | Fails | Lc -59.2 | Large or bold text, headings |
| Black text on #819BCB | 7.48:1 | AAA | Lc 50.1 | Large or bold text, headings |
| #819BCB text on white | 2.80:1 | Fails | Lc 53.9 | Large or bold text, headings |
| #819BCB text on black | 7.48:1 | AAA | Lc -47.9 | 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
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0DAEB
oklch(88.6% 0.026 261.1)
-
Step 300
300
#B0C1E1
oklch(80.9% 0.049 263.1)
-
Step 400
400 (this color)
#819BCB
oklch(68.8% 0.077 262.4)
-
Step 500
500
#6989C5
oklch(63.1% 0.098 262.4)
-
Step 600
600
#5172B2
oklch(55.6% 0.107 262.7)
-
Step 700
700
#415F99
oklch(49% 0.1 262.5)
-
Step 800
800
#364E7C
oklch(42.7% 0.082 262.5)
-
Step 900
900
#2F4164
oklch(37.7% 0.065 262.9)
-
Step 950
950
#1C263A
oklch(26.9% 0.04 263.6)
#819BCB 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) | #8A9ECD | 0.015 |
| Deuteranopia (no green cones) | #8397CA | 0.011 |
| Tritanopia (no blue cones) | #6AA5AB | 0.069 |
| Achromatopsia (no color) | #9A9A9A | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819BCB
#819BCB
oklch(68.8% 0.077 262.4)
- #B29662
#B29662
oklch(68.6% 0.077 82.3)
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 #819BCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.044
- Greyblue #77A1B5 ΔE 0.044
- Bluey Grey #89A0B0 ΔE 0.048
- Bluegrey #85A3B2 ΔE 0.050
- Silver Lake Blue #778DA9 ΔE 0.059
- Faded Blue #658CBB ΔE 0.059
- Cool Steel #97A7B3 ΔE 0.063
- Cornflower Blue #6495ED ΔE 0.066
Use #819BCB 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.