#5997EE
Closest named color: Cornflower Blue (#6495ED). oklch(67.4% 0.145 257.1), rgb(89, 151, 238).
Aa
Black text reads best on this color (7.08:1).
About this color
#5997EE is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.145 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.011 away. Black text reads best on it, at 7.08:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.08:1 |
| White text | 2.96:1 |
Values
| HEX | #5997EE |
| RGB | rgb(89, 151, 238) |
| HSL | hsl(215, 81%, 64%) |
| OKLCH | oklch(67.4% 0.145 257.1) |
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 #5997EE | 2.96:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #5997EE | 7.08:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #5997EE text on white | 2.96:1 | Fails | Lc 55.9 | Large or bold text, headings |
| #5997EE text on black | 7.08:1 | AAA | Lc -45.8 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFB
oklch(88.5% 0.05 257.7)
-
Step 300
300
#9BC3FB
oklch(80.9% 0.091 256.9)
-
Step 400
400 (this color)
#5997EE
oklch(67.4% 0.145 257.1)
-
Step 500
500
#3387F6
oklch(63.1% 0.184 257)
-
Step 600
600
#006DE4
oklch(55.5% 0.199 257.3)
-
Step 700
700
#005CC1
oklch(49.2% 0.175 257.1)
-
Step 800
800
#004BA0
oklch(42.8% 0.152 257.1)
-
Step 900
900
#0D3F80
oklch(37.6% 0.121 257.3)
-
Step 950
950
#0A264B
oklch(27.1% 0.076 256.8)
#5997EE 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) | #719EF2 | 0.033 |
| Deuteranopia (no green cones) | #5C8FEC | 0.021 |
| Tritanopia (no blue cones) | #00ABB7 | 0.120 |
| Achromatopsia (no color) | #969696 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5997EE
#5997EE
oklch(67.4% 0.145 257.1)
- #C68900
#C68900
oklch(67.4% 0.141 77.2)
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 #5997EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.011
- Chefchaouen Blue #4895EF ΔE 0.016
- Dark Sky Blue #448EE4 ΔE 0.035
- Soft Blue #6488EA ΔE 0.039
- Dodger Blue #1E90FF ΔE 0.052
- Perrywinkle #8F8CE7 ΔE 0.065
- Periwinkle Blue #8F99FB ΔE 0.067
- Lavender Blue #8B88F8 ΔE 0.069
Use #5997EE 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.