#819DB5
Closest named color: Greyblue (#77A1B5). oklch(68.3% 0.047 244.4), rgb(129, 157, 181).
Aa
Black text reads best on this color (7.42:1).
About this color
#819DB5 is a medium-light, muted blue. In OKLCH its lightness is 68%, its chroma 0.047 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.015 away. Black text reads best on it, at 7.42:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.42:1 |
| White text | 2.82:1 |
Values
| HEX | #819DB5 |
| RGB | rgb(129, 157, 181) |
| HSL | hsl(208, 26%, 61%) |
| OKLCH | oklch(68.3% 0.047 244.4) |
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 #819DB5 | 2.82:1 | Fails | Lc -59.6 | Large or bold text, headings |
| Black text on #819DB5 | 7.42:1 | AAA | Lc 49.7 | Large or bold text, headings |
| #819DB5 text on white | 2.82:1 | Fails | Lc 54.3 | Large or bold text, headings |
| #819DB5 text on black | 7.42:1 | AAA | Lc -47.5 | 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
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE3
oklch(88.5% 0.016 239.1)
-
Step 300
300
#B1C3D3
oklch(80.9% 0.03 245)
-
Step 400
400 (this color)
#819DB5
oklch(68.3% 0.047 244.4)
-
Step 500
500
#6A8EAC
oklch(63.1% 0.061 244.1)
-
Step 600
600
#517897
oklch(55.6% 0.065 243.3)
-
Step 700
700
#426581
oklch(49.2% 0.061 243.6)
-
Step 800
800
#375269
oklch(42.7% 0.05 245.1)
-
Step 900
900
#2F4455
oklch(37.6% 0.039 243.5)
-
Step 950
950
#1C2832
oklch(27% 0.025 244)
#819DB5 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) | #939DB6 | 0.024 |
| Deuteranopia (no green cones) | #8D97B5 | 0.022 |
| Tritanopia (no blue cones) | #72A3A5 | 0.039 |
| Achromatopsia (no color) | #9A9A9A | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819DB5
#819DB5
oklch(68.3% 0.047 244.4)
- #AE947B
#AE947B
oklch(68.3% 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 #819DB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.015
- Bluey Grey #89A0B0 ΔE 0.017
- Cool Gray #8D99AE ΔE 0.018
- Bluegrey #85A3B2 ΔE 0.020
- Cool Grey #95A3A6 ΔE 0.041
- Cool Steel #97A7B3 ΔE 0.043
- Silver Lake Blue #778DA9 ΔE 0.048
- Blue Grey #758DA3 ΔE 0.051
Use #819DB5 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.