#6390A6
Closest named color: Blue Grey (#758DA3). oklch(62.9% 0.059 230), rgb(99, 144, 166).
Aa
Black text reads best on this color (6.07:1).
About this color
#6390A6 is a medium-light, muted teal or cyan. In OKLCH its lightness is 63%, its chroma 0.059 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Grey (#758DA3), ΔE 0.022 away. Black text reads best on it, at 6.07:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 6.07:1 |
| White text | 3.45:1 |
Values
| HEX | #6390A6 |
| RGB | rgb(99, 144, 166) |
| HSL | hsl(200, 27%, 52%) |
| OKLCH | oklch(62.9% 0.059 230) |
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 #6390A6 | 3.45:1 | AA large text | Lc -67.5 | Content text, not long reading |
| Black text on #6390A6 | 6.07:1 | AA | Lc 42.0 | Non-text elements, placeholder text |
| #6390A6 text on white | 3.45:1 | AA large text | Lc 62.1 | Content text, not long reading |
| #6390A6 text on black | 6.07:1 | AA | Lc -39.6 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CFDBE2
oklch(88.4% 0.016 233)
-
Step 300
300
#AEC5D0
oklch(81% 0.029 228.2)
-
Step 400
400
#83A7B8
oklch(70.8% 0.047 228.4)
-
Step 500
500 (this color)
#6390A6
oklch(62.9% 0.059 230)
-
Step 600
600
#4A7B92
oklch(55.7% 0.064 229.6)
-
Step 700
700
#3A677C
oklch(49% 0.06 229.8)
-
Step 800
800
#315465
oklch(42.7% 0.049 230.5)
-
Step 900
900
#2B4652
oklch(37.8% 0.039 227.9)
-
Step 950
950
#1A2930
oklch(27.1% 0.024 228.7)
#6390A6 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) | #858EA7 | 0.043 |
| Deuteranopia (no green cones) | #7B87A6 | 0.037 |
| Tritanopia (no blue cones) | #499697 | 0.042 |
| Achromatopsia (no color) | #8A8A8A | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6390A6
#6390A6
oklch(62.9% 0.059 230)
- #A77F69
#A77F69
oklch(63% 0.059 50.1)
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 #6390A6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.022
- Silver Lake Blue #778DA9 ΔE 0.026
- Light Slate Gray #778899 ΔE 0.032
- Steel #738595 ΔE 0.036
- Dusty Blue #5A86AD ΔE 0.036
- Faded Blue #658CBB ΔE 0.038
- Off Blue #5684AE ΔE 0.044
- Cadet Blue #5F9EA0 ΔE 0.045
Use #6390A6 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.