#819BCC
Closest named color: Greyblue (#77A1B5). oklch(68.8% 0.078 262.8), rgb(129, 155, 204).
Aa
Black text reads best on this color (7.49:1).
About this color
#819BCC is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.078 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.045 away. Black text reads best on it, at 7.49:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.49:1 |
| White text | 2.80:1 |
Values
| HEX | #819BCC |
| RGB | rgb(129, 155, 204) |
| HSL | hsl(219, 42%, 65%) |
| OKLCH | oklch(68.8% 0.078 262.8) |
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 #819BCC | 2.80:1 | Fails | Lc -59.2 | Large or bold text, headings |
| Black text on #819BCC | 7.49:1 | AAA | Lc 50.2 | Large or bold text, headings |
| #819BCC text on white | 2.80:1 | Fails | Lc 53.9 | Large or bold text, headings |
| #819BCC text on black | 7.49:1 | 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
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0DAEC
oklch(88.6% 0.027 262.3)
-
Step 300
300
#B0C1E1
oklch(80.9% 0.049 263.1)
-
Step 400
400 (this color)
#819BCC
oklch(68.8% 0.078 262.8)
-
Step 500
500
#6989C6
oklch(63.1% 0.099 262.7)
-
Step 600
600
#5072B3
oklch(55.6% 0.109 262.4)
-
Step 700
700
#415F9A
oklch(49.1% 0.102 262.8)
-
Step 800
800
#364E7D
oklch(42.7% 0.084 262.8)
-
Step 900
900
#2F4164
oklch(37.7% 0.065 262.9)
-
Step 950
950
#1C263B
oklch(27% 0.042 264.3)
#819BCC 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) | #8A9ECE | 0.015 |
| Deuteranopia (no green cones) | #8297CB | 0.011 |
| Tritanopia (no blue cones) | #69A5AC | 0.070 |
| Achromatopsia (no color) | #9A9A9A | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819BCC
#819BCC
oklch(68.8% 0.078 262.8)
- #B39761
#B39761
oklch(68.9% 0.079 83.1)
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 #819BCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.045
- Cool Gray #8D99AE ΔE 0.045
- Bluey Grey #89A0B0 ΔE 0.049
- Bluegrey #85A3B2 ΔE 0.051
- Faded Blue #658CBB ΔE 0.060
- Silver Lake Blue #778DA9 ΔE 0.060
- Cool Steel #97A7B3 ΔE 0.064
- Cornflower Blue #6495ED ΔE 0.064
Use #819BCC 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.