#819CBB
Closest named color: Greyblue (#77A1B5). oklch(68.3% 0.055 252.1), rgb(129, 156, 187).
Aa
Black text reads best on this color (7.40:1).
About this color
#819CBB is a medium-light, muted blue. In OKLCH its lightness is 68%, its chroma 0.055 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.022 away. Black text reads best on it, at 7.40:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.40:1 |
| White text | 2.83:1 |
Values
| HEX | #819CBB |
| RGB | rgb(129, 156, 187) |
| HSL | hsl(212, 30%, 62%) |
| OKLCH | oklch(68.3% 0.055 252.1) |
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 #819CBB | 2.83:1 | Fails | Lc -59.7 | Large or bold text, headings |
| Black text on #819CBB | 7.40:1 | AAA | Lc 49.7 | Large or bold text, headings |
| #819CBB text on white | 2.83:1 | Fails | Lc 54.4 | Large or bold text, headings |
| #819CBB text on black | 7.40:1 | AAA | Lc -47.4 | 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
#E5EAF0
oklch(93.5% 0.01 252.8)
-
Step 200
200
#D0DAE6
oklch(88.4% 0.02 252.9)
-
Step 300
300
#B1C3D7
oklch(81% 0.035 251)
-
Step 400
400 (this color)
#819CBB
oklch(68.3% 0.055 252.1)
-
Step 500
500
#6A8CB3
oklch(63% 0.07 252.3)
-
Step 600
600
#52769F
oklch(55.6% 0.076 252.4)
-
Step 700
700
#426388
oklch(49.1% 0.071 252.1)
-
Step 800
800
#37516F
oklch(42.8% 0.059 252.7)
-
Step 900
900
#30435A
oklch(37.7% 0.047 253.7)
-
Step 950
950
#1C2734
oklch(26.9% 0.029 253)
#819CBB 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) | #919DBD | 0.022 |
| Deuteranopia (no green cones) | #8A97BA | 0.017 |
| Tritanopia (no blue cones) | #70A3A6 | 0.048 |
| Achromatopsia (no color) | #999999 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819CBB
#819CBB
oklch(68.3% 0.055 252.1)
- #AF9474
#AF9474
oklch(68.3% 0.055 71.4)
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 #819CBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.022
- Cool Gray #8D99AE ΔE 0.023
- Bluey Grey #89A0B0 ΔE 0.025
- Bluegrey #85A3B2 ΔE 0.028
- Silver Lake Blue #778DA9 ΔE 0.047
- Cool Steel #97A7B3 ΔE 0.048
- Cool Grey #95A3A6 ΔE 0.049
- Blue Grey #758DA3 ΔE 0.052
Use #819CBB 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.