#73B4DB
Closest named color: Light Grey Blue (#9DBCD4). oklch(74.1% 0.087 236), rgb(115, 180, 219).
Aa
Black text reads best on this color (9.28:1).
About this color
#73B4DB is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.087 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Light Grey Blue (#9DBCD4), ΔE 0.056 away. Black text reads best on it, at 9.28:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Light Grey Blue (#9DBCD4) |
| Black text | 9.28:1 |
| White text | 2.26:1 |
Values
| HEX | #73B4DB |
| RGB | rgb(115, 180, 219) |
| HSL | hsl(203, 59%, 65%) |
| OKLCH | oklch(74.1% 0.087 236) |
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 #73B4DB | 2.26:1 | Fails | Lc -49.3 | Large or bold text, headings |
| Black text on #73B4DB | 9.28:1 | AAA | Lc 59.5 | Large or bold text, headings |
| #73B4DB text on white | 2.26:1 | Fails | Lc 44.5 | Non-text elements, placeholder text |
| #73B4DB text on black | 9.28:1 | AAA | Lc -57.6 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C7DDEB
oklch(88.6% 0.03 235.7)
-
Step 300
300
#A0C7E0
oklch(81% 0.055 236.5)
-
Step 400
400 (this color)
#73B4DB
oklch(74.1% 0.087 236)
-
Step 500
500
#3993C4
oklch(63.1% 0.112 236.4)
-
Step 600
600
#007CAF
oklch(55.5% 0.12 236.1)
-
Step 700
700
#006994
oklch(49.2% 0.105 235.5)
-
Step 800
800
#00567A
oklch(42.8% 0.091 235.4)
-
Step 900
900
#0F4763
oklch(37.7% 0.073 235.9)
-
Step 950
950
#0C2A3A
oklch(27.1% 0.046 235.5)
#73B4DB 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) | #A2B3DD | 0.054 |
| Deuteranopia (no green cones) | #94A7DA | 0.048 |
| Tritanopia (no blue cones) | #41BEC1 | 0.067 |
| Achromatopsia (no color) | #ACACAC | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #73B4DB
#73B4DB
oklch(74.1% 0.087 236)
- #D69D75
#D69D75
oklch(74.1% 0.087 56)
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 #73B4DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Grey Blue #9DBCD4 ΔE 0.056
- Light Cornflower Blue #98C1D9 ΔE 0.058
- Carolina Blue #8AB8FE ΔE 0.059
- Vivid Sky Blue #4CC9F0 ΔE 0.059
- Lightblue #7BC8F6 ΔE 0.061
- Bluegrey #85A3B2 ΔE 0.064
- Greyblue #77A1B5 ΔE 0.065
- Cool Steel #97A7B3 ΔE 0.066
Use #73B4DB 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.