#819CB5
Closest named color: Greyblue (#77A1B5). oklch(68.1% 0.048 246.5), rgb(129, 156, 181).
Aa
Black text reads best on this color (7.35:1).
About this color
#819CB5 is a medium-light, muted blue. In OKLCH its lightness is 68%, its chroma 0.048 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.017 away. Black text reads best on it, at 7.35:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.35:1 |
| White text | 2.85:1 |
Values
| HEX | #819CB5 |
| RGB | rgb(129, 156, 181) |
| HSL | hsl(209, 26%, 61%) |
| OKLCH | oklch(68.1% 0.048 246.5) |
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 #819CB5 | 2.85:1 | Fails | Lc -60.0 | Large or bold text, headings |
| Black text on #819CB5 | 7.35:1 | AAA | Lc 49.4 | Large or bold text, headings |
| #819CB5 text on white | 2.85:1 | Fails | Lc 54.7 | Large or bold text, headings |
| #819CB5 text on black | 7.35:1 | AAA | Lc -47.1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EAEF
oklch(93.5% 0.009 247.9)
-
Step 200
200
#D1DAE4
oklch(88.4% 0.017 250.9)
-
Step 300
300
#B2C3D3
oklch(80.9% 0.029 246.5)
-
Step 400
400 (this color)
#819CB5
oklch(68.1% 0.048 246.5)
-
Step 500
500
#6B8DAD
oklch(63% 0.062 247.3)
-
Step 600
600
#527798
oklch(55.5% 0.067 246.3)
-
Step 700
700
#436482
oklch(49.1% 0.062 246.8)
-
Step 800
800
#37526A
oklch(42.7% 0.052 246.2)
-
Step 900
900
#304456
oklch(37.8% 0.04 246.3)
-
Step 950
950
#1C2832
oklch(27% 0.025 244)
#819CB5 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) | #929CB6 | 0.023 |
| Deuteranopia (no green cones) | #8C96B5 | 0.021 |
| Tritanopia (no blue cones) | #72A2A4 | 0.040 |
| Achromatopsia (no color) | #999999 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819CB5
#819CB5
oklch(68.1% 0.048 246.5)
- #AD937A
#AD937A
oklch(68% 0.047 65.8)
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 #819CB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.017
- Cool Gray #8D99AE ΔE 0.018
- Bluey Grey #89A0B0 ΔE 0.019
- Bluegrey #85A3B2 ΔE 0.023
- Cool Grey #95A3A6 ΔE 0.043
- Cool Steel #97A7B3 ΔE 0.045
- Silver Lake Blue #778DA9 ΔE 0.045
- Blue Grey #758DA3 ΔE 0.049
Use #819CB5 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.