#6388AF
Closest named color: Dusty Blue (#5A86AD). oklch(61.5% 0.073 250.4), rgb(99, 136, 175).
Aa
Black text reads best on this color (5.67:1).
About this color
#6388AF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.073 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.013 away. Black text reads best on it, at 5.67:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.67:1 |
| White text | 3.70:1 |
Values
| HEX | #6388AF |
| RGB | rgb(99, 136, 175) |
| HSL | hsl(211, 32%, 54%) |
| OKLCH | oklch(61.5% 0.073 250.4) |
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 #6388AF | 3.70:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #6388AF | 5.67:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #6388AF text on white | 3.70:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #6388AF text on black | 5.67:1 | AA | Lc -37.1 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D0DAE6
oklch(88.4% 0.02 252.9)
-
Step 300
300
#B0C3D7
oklch(80.9% 0.035 249.6)
-
Step 400
400
#86A4C3
oklch(70.7% 0.056 249.5)
-
Step 500
500 (this color)
#6388AF
oklch(61.5% 0.073 250.4)
-
Step 600
600
#4F77A0
oklch(55.7% 0.078 250)
-
Step 700
700
#3F6489
oklch(49.2% 0.073 249.5)
-
Step 800
800
#35516F
oklch(42.6% 0.061 251)
-
Step 900
900
#2E435A
oklch(37.6% 0.048 251.4)
-
Step 950
950
#1B2835
oklch(27.1% 0.03 249)
#6388AF 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) | #7989B1 | 0.029 |
| Deuteranopia (no green cones) | #6F81AE | 0.023 |
| Tritanopia (no blue cones) | #469195 | 0.063 |
| Achromatopsia (no color) | #858585 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6388AF
#6388AF
oklch(61.5% 0.073 250.4)
- #A17D53
#A17D53
oklch(61.5% 0.073 70.1)
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 #6388AF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.013
- Faded Blue #658CBB ΔE 0.020
- Off Blue #5684AE ΔE 0.020
- Silver Lake Blue #778DA9 ΔE 0.032
- Cool Blue #4984B8 ΔE 0.034
- Blue Grey #758DA3 ΔE 0.035
- Steel Blue #4682B4 ΔE 0.038
- Light Slate Gray #778899 ΔE 0.040
Use #6388AF 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.