#618FBE
Closest named color: Faded Blue (#658CBB). oklch(63.6% 0.087 249.8), rgb(97, 143, 190).
Aa
Black text reads best on this color (6.18:1).
About this color
#618FBE is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.087 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.009 away. Black text reads best on it, at 6.18:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.18:1 |
| White text | 3.39:1 |
Values
| HEX | #618FBE |
| RGB | rgb(97, 143, 190) |
| HSL | hsl(210, 42%, 56%) |
| OKLCH | oklch(63.6% 0.087 249.8) |
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 #618FBE | 3.39:1 | AA large text | Lc -66.8 | Content text, not long reading |
| Black text on #618FBE | 6.18:1 | AA | Lc 42.7 | Non-text elements, placeholder text |
| #618FBE text on white | 3.39:1 | AA large text | Lc 61.4 | Content text, not long reading |
| #618FBE text on black | 6.18:1 | AA | Lc -40.3 | 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
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE9
oklch(88.6% 0.024 250.1)
-
Step 300
300
#ACC3DC
oklch(80.8% 0.043 250.6)
-
Step 400
400
#80A4CA
oklch(70.6% 0.069 250.2)
-
Step 500
500 (this color)
#618FBE
oklch(63.6% 0.087 249.8)
-
Step 600
600
#4577A9
oklch(55.6% 0.095 249.9)
-
Step 700
700
#376491
oklch(49.2% 0.088 250)
-
Step 800
800
#2E5275
oklch(42.8% 0.072 249.2)
-
Step 900
900
#29445F
oklch(37.8% 0.057 249.6)
-
Step 950
950
#182837
oklch(27% 0.035 247.7)
#618FBE 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) | #7C90C0 | 0.033 |
| Deuteranopia (no green cones) | #7087BD | 0.026 |
| Tritanopia (no blue cones) | #369A9F | 0.075 |
| Achromatopsia (no color) | #8B8B8B | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #618FBE
#618FBE
oklch(63.6% 0.087 249.8)
- #AD814E
#AD814E
oklch(63.5% 0.087 69.3)
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 #618FBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.009
- Dusty Blue #5A86AD ΔE 0.034
- Silver Lake Blue #778DA9 ΔE 0.038
- Off Blue #5684AE ΔE 0.039
- Cool Blue #4984B8 ΔE 0.043
- Blue Grey #758DA3 ΔE 0.044
- Steel Blue #4682B4 ΔE 0.050
- Light Slate Gray #778899 ΔE 0.057
Use #618FBE 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.