#819EB4
Closest named color: Greyblue (#77A1B5). oklch(68.5% 0.046 241.1), rgb(129, 158, 180).
Aa
Black text reads best on this color (7.48:1).
About this color
#819EB4 is a medium-light, muted blue. In OKLCH its lightness is 68%, its chroma 0.046 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.013 away. Black text reads best on it, at 7.48:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.48:1 |
| White text | 2.80:1 |
Values
| HEX | #819EB4 |
| RGB | rgb(129, 158, 180) |
| HSL | hsl(206, 25%, 61%) |
| OKLCH | oklch(68.5% 0.046 241.1) |
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 #819EB4 | 2.80:1 | Fails | Lc -59.2 | Large or bold text, headings |
| Black text on #819EB4 | 7.48:1 | AAA | Lc 50.1 | Large or bold text, headings |
| #819EB4 text on white | 2.80:1 | Fails | Lc 54.0 | Large or bold text, headings |
| #819EB4 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
#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
#B1C3D2
oklch(80.8% 0.029 243.2)
-
Step 400
400 (this color)
#819EB4
oklch(68.5% 0.046 241.1)
-
Step 500
500
#698EAA
oklch(63% 0.059 241.5)
-
Step 600
600
#507895
oklch(55.5% 0.064 240.8)
-
Step 700
700
#41657F
oklch(49% 0.059 240.9)
-
Step 800
800
#365368
oklch(42.8% 0.049 240.8)
-
Step 900
900
#2F4454
oklch(37.6% 0.038 241.8)
-
Step 950
950
#1C2831
oklch(27% 0.024 241.1)
#819EB4 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) | #959DB5 | 0.026 |
| Deuteranopia (no green cones) | #8E98B4 | 0.022 |
| Tritanopia (no blue cones) | #72A3A5 | 0.036 |
| Achromatopsia (no color) | #9A9A9A | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819EB4
#819EB4
oklch(68.5% 0.046 241.1)
- #AF947D
#AF947D
oklch(68.5% 0.046 62.4)
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 #819EB4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.013
- Bluey Grey #89A0B0 ΔE 0.014
- Bluegrey #85A3B2 ΔE 0.017
- Cool Gray #8D99AE ΔE 0.019
- Cool Grey #95A3A6 ΔE 0.038
- Cool Steel #97A7B3 ΔE 0.041
- Silver Lake Blue #778DA9 ΔE 0.050
- Cadet Blue #5F9EA0 ΔE 0.052
Use #819EB4 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.